diff --git "a/duckdb-nsql/eval/metrics/test_suite_sql_eval/tables.json" "b/duckdb-nsql/eval/metrics/test_suite_sql_eval/tables.json"
new file mode 100644--- /dev/null
+++ "b/duckdb-nsql/eval/metrics/test_suite_sql_eval/tables.json"
@@ -0,0 +1,50555 @@
+[
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "perpetrator id"
+            ],
+            [
+                0,
+                "people id"
+            ],
+            [
+                0,
+                "date"
+            ],
+            [
+                0,
+                "year"
+            ],
+            [
+                0,
+                "location"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                0,
+                "killed"
+            ],
+            [
+                0,
+                "injured"
+            ],
+            [
+                1,
+                "people id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "height"
+            ],
+            [
+                1,
+                "weight"
+            ],
+            [
+                1,
+                "home town"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Perpetrator_ID"
+            ],
+            [
+                0,
+                "People_ID"
+            ],
+            [
+                0,
+                "Date"
+            ],
+            [
+                0,
+                "Year"
+            ],
+            [
+                0,
+                "Location"
+            ],
+            [
+                0,
+                "Country"
+            ],
+            [
+                0,
+                "Killed"
+            ],
+            [
+                0,
+                "Injured"
+            ],
+            [
+                1,
+                "People_ID"
+            ],
+            [
+                1,
+                "Name"
+            ],
+            [
+                1,
+                "Height"
+            ],
+            [
+                1,
+                "Weight"
+            ],
+            [
+                1,
+                "Home Town"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text"
+        ],
+        "db_id": "perpetrator",
+        "foreign_keys": [
+            [
+                2,
+                9
+            ]
+        ],
+        "primary_keys": [
+            1,
+            9
+        ],
+        "table_names": [
+            "perpetrator",
+            "people"
+        ],
+        "table_names_original": [
+            "perpetrator",
+            "people"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "building"
+            ],
+            [
+                0,
+                "room number"
+            ],
+            [
+                0,
+                "capacity"
+            ],
+            [
+                1,
+                "department name"
+            ],
+            [
+                1,
+                "building"
+            ],
+            [
+                1,
+                "budget"
+            ],
+            [
+                2,
+                "course id"
+            ],
+            [
+                2,
+                "title"
+            ],
+            [
+                2,
+                "department name"
+            ],
+            [
+                2,
+                "credits"
+            ],
+            [
+                3,
+                "id"
+            ],
+            [
+                3,
+                "name"
+            ],
+            [
+                3,
+                "department name"
+            ],
+            [
+                3,
+                "salary"
+            ],
+            [
+                4,
+                "course id"
+            ],
+            [
+                4,
+                "section id"
+            ],
+            [
+                4,
+                "semester"
+            ],
+            [
+                4,
+                "year"
+            ],
+            [
+                4,
+                "building"
+            ],
+            [
+                4,
+                "room number"
+            ],
+            [
+                4,
+                "time slot id"
+            ],
+            [
+                5,
+                "id"
+            ],
+            [
+                5,
+                "course id"
+            ],
+            [
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+            [
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+                "semester"
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+            [
+                5,
+                "year"
+            ],
+            [
+                6,
+                "id"
+            ],
+            [
+                6,
+                "name"
+            ],
+            [
+                6,
+                "department name"
+            ],
+            [
+                6,
+                "total credits"
+            ],
+            [
+                7,
+                "id"
+            ],
+            [
+                7,
+                "course id"
+            ],
+            [
+                7,
+                "section id"
+            ],
+            [
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+                "semester"
+            ],
+            [
+                7,
+                "year"
+            ],
+            [
+                7,
+                "grade"
+            ],
+            [
+                8,
+                "student id"
+            ],
+            [
+                8,
+                "instructor id"
+            ],
+            [
+                9,
+                "time slot id"
+            ],
+            [
+                9,
+                "day"
+            ],
+            [
+                9,
+                "start hour"
+            ],
+            [
+                9,
+                "start minute"
+            ],
+            [
+                9,
+                "end hour"
+            ],
+            [
+                9,
+                "end minute"
+            ],
+            [
+                10,
+                "course id"
+            ],
+            [
+                10,
+                "prerequisite id"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "building"
+            ],
+            [
+                0,
+                "room_number"
+            ],
+            [
+                0,
+                "capacity"
+            ],
+            [
+                1,
+                "dept_name"
+            ],
+            [
+                1,
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+            ],
+            [
+                1,
+                "budget"
+            ],
+            [
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+                "course_id"
+            ],
+            [
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+                "title"
+            ],
+            [
+                2,
+                "dept_name"
+            ],
+            [
+                2,
+                "credits"
+            ],
+            [
+                3,
+                "ID"
+            ],
+            [
+                3,
+                "name"
+            ],
+            [
+                3,
+                "dept_name"
+            ],
+            [
+                3,
+                "salary"
+            ],
+            [
+                4,
+                "course_id"
+            ],
+            [
+                4,
+                "sec_id"
+            ],
+            [
+                4,
+                "semester"
+            ],
+            [
+                4,
+                "year"
+            ],
+            [
+                4,
+                "building"
+            ],
+            [
+                4,
+                "room_number"
+            ],
+            [
+                4,
+                "time_slot_id"
+            ],
+            [
+                5,
+                "ID"
+            ],
+            [
+                5,
+                "course_id"
+            ],
+            [
+                5,
+                "sec_id"
+            ],
+            [
+                5,
+                "semester"
+            ],
+            [
+                5,
+                "year"
+            ],
+            [
+                6,
+                "ID"
+            ],
+            [
+                6,
+                "name"
+            ],
+            [
+                6,
+                "dept_name"
+            ],
+            [
+                6,
+                "tot_cred"
+            ],
+            [
+                7,
+                "ID"
+            ],
+            [
+                7,
+                "course_id"
+            ],
+            [
+                7,
+                "sec_id"
+            ],
+            [
+                7,
+                "semester"
+            ],
+            [
+                7,
+                "year"
+            ],
+            [
+                7,
+                "grade"
+            ],
+            [
+                8,
+                "s_ID"
+            ],
+            [
+                8,
+                "i_ID"
+            ],
+            [
+                9,
+                "time_slot_id"
+            ],
+            [
+                9,
+                "day"
+            ],
+            [
+                9,
+                "start_hr"
+            ],
+            [
+                9,
+                "start_min"
+            ],
+            [
+                9,
+                "end_hr"
+            ],
+            [
+                9,
+                "end_min"
+            ],
+            [
+                10,
+                "course_id"
+            ],
+            [
+                10,
+                "prereq_id"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text"
+        ],
+        "db_id": "college_2",
+        "foreign_keys": [
+            [
+                9,
+                4
+            ],
+            [
+                13,
+                4
+            ],
+            [
+                19,
+                1
+            ],
+            [
+                20,
+                2
+            ],
+            [
+                15,
+                7
+            ],
+            [
+                22,
+                11
+            ],
+            [
+                23,
+                15
+            ],
+            [
+                24,
+                16
+            ],
+            [
+                25,
+                17
+            ],
+            [
+                26,
+                18
+            ],
+            [
+                29,
+                4
+            ],
+            [
+                31,
+                27
+            ],
+            [
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+                15
+            ],
+            [
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+                16
+            ],
+            [
+                34,
+                17
+            ],
+            [
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+                18
+            ],
+            [
+                37,
+                27
+            ],
+            [
+                38,
+                11
+            ],
+            [
+                46,
+                7
+            ],
+            [
+                45,
+                7
+            ]
+        ],
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+            4,
+            7,
+            11,
+            15,
+            22,
+            27,
+            31,
+            37,
+            39,
+            45
+        ],
+        "table_names": [
+            "classroom",
+            "department",
+            "course",
+            "instructor",
+            "section",
+            "teaches",
+            "student",
+            "takes classes",
+            "advisor",
+            "time slot",
+            "prerequisite"
+        ],
+        "table_names_original": [
+            "classroom",
+            "department",
+            "course",
+            "instructor",
+            "section",
+            "teaches",
+            "student",
+            "takes",
+            "advisor",
+            "time_slot",
+            "prereq"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "id"
+            ],
+            [
+                0,
+                "city"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                0,
+                "iata"
+            ],
+            [
+                0,
+                "icao"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                1,
+                "id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "type"
+            ],
+            [
+                1,
+                "principal activities"
+            ],
+            [
+                1,
+                "incorporated in"
+            ],
+            [
+                1,
+                "group equity shareholding"
+            ],
+            [
+                2,
+                "id"
+            ],
+            [
+                2,
+                "vehicle flight number"
+            ],
+            [
+                2,
+                "date"
+            ],
+            [
+                2,
+                "pilot"
+            ],
+            [
+                2,
+                "velocity"
+            ],
+            [
+                2,
+                "altitude"
+            ],
+            [
+                2,
+                "airport id"
+            ],
+            [
+                2,
+                "company id"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "id"
+            ],
+            [
+                0,
+                "City"
+            ],
+            [
+                0,
+                "Country"
+            ],
+            [
+                0,
+                "IATA"
+            ],
+            [
+                0,
+                "ICAO"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                1,
+                "id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "Type"
+            ],
+            [
+                1,
+                "Principal_activities"
+            ],
+            [
+                1,
+                "Incorporated_in"
+            ],
+            [
+                1,
+                "Group_Equity_Shareholding"
+            ],
+            [
+                2,
+                "id"
+            ],
+            [
+                2,
+                "Vehicle_Flight_number"
+            ],
+            [
+                2,
+                "Date"
+            ],
+            [
+                2,
+                "Pilot"
+            ],
+            [
+                2,
+                "Velocity"
+            ],
+            [
+                2,
+                "Altitude"
+            ],
+            [
+                2,
+                "airport_id"
+            ],
+            [
+                2,
+                "company_id"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "flight_company",
+        "foreign_keys": [
+            [
+                20,
+                7
+            ],
+            [
+                19,
+                1
+            ]
+        ],
+        "primary_keys": [
+            1,
+            7,
+            13
+        ],
+        "table_names": [
+            "airport",
+            "operate company",
+            "flight"
+        ],
+        "table_names_original": [
+            "airport",
+            "operate_company",
+            "flight"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "institution id"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "author id"
+            ],
+            [
+                1,
+                "last name"
+            ],
+            [
+                1,
+                "first name"
+            ],
+            [
+                2,
+                "paper id"
+            ],
+            [
+                2,
+                "title"
+            ],
+            [
+                3,
+                "author id"
+            ],
+            [
+                3,
+                "institution id"
+            ],
+            [
+                3,
+                "paper id"
+            ],
+            [
+                3,
+                "author count"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "instID"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "authID"
+            ],
+            [
+                1,
+                "lname"
+            ],
+            [
+                1,
+                "fname"
+            ],
+            [
+                2,
+                "paperID"
+            ],
+            [
+                2,
+                "title"
+            ],
+            [
+                3,
+                "authID"
+            ],
+            [
+                3,
+                "instID"
+            ],
+            [
+                3,
+                "paperID"
+            ],
+            [
+                3,
+                "authOrder"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "icfp_1",
+        "foreign_keys": [
+            [
+                11,
+                7
+            ],
+            [
+                10,
+                1
+            ],
+            [
+                9,
+                4
+            ]
+        ],
+        "primary_keys": [
+            1,
+            4,
+            7,
+            9
+        ],
+        "table_names": [
+            "institution",
+            "authors",
+            "papers",
+            "authorship count"
+        ],
+        "table_names_original": [
+            "Inst",
+            "Authors",
+            "Papers",
+            "Authorship"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "body builder id"
+            ],
+            [
+                0,
+                "people id"
+            ],
+            [
+                0,
+                "snatch"
+            ],
+            [
+                0,
+                "clean jerk"
+            ],
+            [
+                0,
+                "total"
+            ],
+            [
+                1,
+                "people id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "height"
+            ],
+            [
+                1,
+                "weight"
+            ],
+            [
+                1,
+                "birth date"
+            ],
+            [
+                1,
+                "birth place"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Body_Builder_ID"
+            ],
+            [
+                0,
+                "People_ID"
+            ],
+            [
+                0,
+                "Snatch"
+            ],
+            [
+                0,
+                "Clean_Jerk"
+            ],
+            [
+                0,
+                "Total"
+            ],
+            [
+                1,
+                "People_ID"
+            ],
+            [
+                1,
+                "Name"
+            ],
+            [
+                1,
+                "Height"
+            ],
+            [
+                1,
+                "Weight"
+            ],
+            [
+                1,
+                "Birth_Date"
+            ],
+            [
+                1,
+                "Birth_Place"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text"
+        ],
+        "db_id": "body_builder",
+        "foreign_keys": [
+            [
+                2,
+                6
+            ]
+        ],
+        "primary_keys": [
+            1,
+            6
+        ],
+        "table_names": [
+            "body builder",
+            "people"
+        ],
+        "table_names_original": [
+            "body_builder",
+            "people"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "storm id"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "dates active"
+            ],
+            [
+                0,
+                "max speed"
+            ],
+            [
+                0,
+                "damage millions usd"
+            ],
+            [
+                0,
+                "number deaths"
+            ],
+            [
+                1,
+                "region id"
+            ],
+            [
+                1,
+                "region code"
+            ],
+            [
+                1,
+                "region name"
+            ],
+            [
+                2,
+                "region id"
+            ],
+            [
+                2,
+                "storm id"
+            ],
+            [
+                2,
+                "number city affected"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Storm_ID"
+            ],
+            [
+                0,
+                "Name"
+            ],
+            [
+                0,
+                "Dates_active"
+            ],
+            [
+                0,
+                "Max_speed"
+            ],
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+    },
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+            [
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+            [
+                2,
+                "headquartered city"
+            ],
+            [
+                2,
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+            ],
+            [
+                2,
+                "city area"
+            ],
+            [
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+            ],
+            [
+                3,
+                "product id"
+            ],
+            [
+                4,
+                "store id"
+            ],
+            [
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+                "district id"
+            ]
+        ],
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+                "*"
+            ],
+            [
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+            ],
+            [
+                0,
+                "product"
+            ],
+            [
+                0,
+                "dimensions"
+            ],
+            [
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+                "dpi"
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+            [
+                0,
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+            ],
+            [
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+                "max_page_size"
+            ],
+            [
+                0,
+                "interface"
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+            [
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+                "Store_ID"
+            ],
+            [
+                1,
+                "Store_Name"
+            ],
+            [
+                1,
+                "Type"
+            ],
+            [
+                1,
+                "Area_size"
+            ],
+            [
+                1,
+                "Number_of_product_category"
+            ],
+            [
+                1,
+                "Ranking"
+            ],
+            [
+                2,
+                "District_ID"
+            ],
+            [
+                2,
+                "District_name"
+            ],
+            [
+                2,
+                "Headquartered_City"
+            ],
+            [
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+                "City_Population"
+            ],
+            [
+                2,
+                "City_Area"
+            ],
+            [
+                3,
+                "Store_ID"
+            ],
+            [
+                3,
+                "Product_ID"
+            ],
+            [
+                4,
+                "Store_ID"
+            ],
+            [
+                4,
+                "District_ID"
+            ]
+        ],
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+            "number",
+            "text",
+            "text",
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+            "number",
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+            "number"
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+            "store product",
+            "store district"
+        ],
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+            "product",
+            "store",
+            "district",
+            "store_product",
+            "store_district"
+        ]
+    },
+    {
+        "column_names": [
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+                "*"
+            ],
+            [
+                0,
+                "company id"
+            ],
+            [
+                0,
+                "company type"
+            ],
+            [
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+                "company name"
+            ],
+            [
+                0,
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+            ],
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+            ],
+            [
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+            ],
+            [
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+            [
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+            [
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+                "part name"
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+            [
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+                "chargeable yn"
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+            [
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+            [
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+            [
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+                "gender"
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+            [
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+            [
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+                "asset id"
+            ],
+            [
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+                "maintenance contract id"
+            ],
+            [
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+            [
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+            [
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+            ],
+            [
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+                "asset model"
+            ],
+            [
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+            ],
+            [
+                5,
+                "asset disposed date"
+            ],
+            [
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+            ],
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+                "asset id"
+            ],
+            [
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+                "part id"
+            ],
+            [
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+                "engineer id"
+            ],
+            [
+                7,
+                "company id"
+            ],
+            [
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+                "first name"
+            ],
+            [
+                7,
+                "last name"
+            ],
+            [
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+                "other details"
+            ],
+            [
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+            ],
+            [
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+                "skill id"
+            ],
+            [
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+            ],
+            [
+                9,
+                "asset id"
+            ],
+            [
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+                "recorded by staff id"
+            ],
+            [
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+                "fault log entry datetime"
+            ],
+            [
+                9,
+                "fault description"
+            ],
+            [
+                9,
+                "other fault details"
+            ],
+            [
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+                "engineer visit id"
+            ],
+            [
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+                "contact staff id"
+            ],
+            [
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+                "engineer id"
+            ],
+            [
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+            ],
+            [
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+                "fault status"
+            ],
+            [
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+                "visit start datetime"
+            ],
+            [
+                10,
+                "visit end datetime"
+            ],
+            [
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+                "other visit details"
+            ],
+            [
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+            ],
+            [
+                11,
+                "part id"
+            ],
+            [
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+                "fault short name"
+            ],
+            [
+                11,
+                "fault description"
+            ],
+            [
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+                "other fault details"
+            ],
+            [
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+                "fault log entry id"
+            ],
+            [
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+                "part fault id"
+            ],
+            [
+                12,
+                "fault status"
+            ],
+            [
+                13,
+                "part fault id"
+            ],
+            [
+                13,
+                "skill id"
+            ]
+        ],
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+                "*"
+            ],
+            [
+                0,
+                "company_id"
+            ],
+            [
+                0,
+                "company_type"
+            ],
+            [
+                0,
+                "company_name"
+            ],
+            [
+                0,
+                "company_address"
+            ],
+            [
+                0,
+                "other_company_details"
+            ],
+            [
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+                "maintenance_contract_id"
+            ],
+            [
+                1,
+                "maintenance_contract_company_id"
+            ],
+            [
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+                "contract_start_date"
+            ],
+            [
+                1,
+                "contract_end_date"
+            ],
+            [
+                1,
+                "other_contract_details"
+            ],
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+                "part_id"
+            ],
+            [
+                2,
+                "part_name"
+            ],
+            [
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+                "chargeable_yn"
+            ],
+            [
+                2,
+                "chargeable_amount"
+            ],
+            [
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+                "other_part_details"
+            ],
+            [
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+                "skill_id"
+            ],
+            [
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+                "skill_code"
+            ],
+            [
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+                "skill_description"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "gender"
+            ],
+            [
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+                "other_staff_details"
+            ],
+            [
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+            ],
+            [
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+                "maintenance_contract_id"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "asset_make"
+            ],
+            [
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+            ],
+            [
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+                "asset_acquired_date"
+            ],
+            [
+                5,
+                "asset_disposed_date"
+            ],
+            [
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+                "other_asset_details"
+            ],
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+                "asset_id"
+            ],
+            [
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+                "part_id"
+            ],
+            [
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+            ],
+            [
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+                "company_id"
+            ],
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+                "first_name"
+            ],
+            [
+                7,
+                "last_name"
+            ],
+            [
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+                "other_details"
+            ],
+            [
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+                "engineer_id"
+            ],
+            [
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+                "skill_id"
+            ],
+            [
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+                "fault_log_entry_id"
+            ],
+            [
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+            [
+                9,
+                "recorded_by_staff_id"
+            ],
+            [
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+                "fault_log_entry_datetime"
+            ],
+            [
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+            ],
+            [
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+                "other_fault_details"
+            ],
+            [
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+                "engineer_visit_id"
+            ],
+            [
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+            ],
+            [
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+                "engineer_id"
+            ],
+            [
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+                "fault_log_entry_id"
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+            [
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+                "fault_status"
+            ],
+            [
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+                "visit_start_datetime"
+            ],
+            [
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+                "visit_end_datetime"
+            ],
+            [
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+                "other_visit_details"
+            ],
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+            ],
+            [
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+                "part_id"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "other_fault_details"
+            ],
+            [
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+                "fault_log_entry_id"
+            ],
+            [
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+                "part_fault_id"
+            ],
+            [
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+                "fault_status"
+            ],
+            [
+                13,
+                "part_fault_id"
+            ],
+            [
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+                "skill_id"
+            ]
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+            "number",
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+            "text",
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+            "number",
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+        ],
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+            ],
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+            16,
+            19,
+            23,
+            34,
+            41,
+            47,
+            55
+        ],
+        "table_names": [
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+            "maintenance contracts",
+            "parts",
+            "skills",
+            "staff",
+            "assets",
+            "asset parts",
+            "maintenance engineers",
+            "engineer skills",
+            "fault log",
+            "engineer visits",
+            "part faults",
+            "fault log parts",
+            "skills required to fix"
+        ],
+        "table_names_original": [
+            "Third_Party_Companies",
+            "Maintenance_Contracts",
+            "Parts",
+            "Skills",
+            "Staff",
+            "Assets",
+            "Asset_Parts",
+            "Maintenance_Engineers",
+            "Engineer_Skills",
+            "Fault_Log",
+            "Engineer_Visits",
+            "Part_Faults",
+            "Fault_Log_Parts",
+            "Skills_Required_To_Fix"
+        ]
+    },
+    {
+        "column_names": [
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "address id"
+            ],
+            [
+                0,
+                "line 1"
+            ],
+            [
+                0,
+                "line 2"
+            ],
+            [
+                0,
+                "city"
+            ],
+            [
+                0,
+                "zip postcode"
+            ],
+            [
+                0,
+                "state province county"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "person id"
+            ],
+            [
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+                "first name"
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+            [
+                1,
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+            [
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+            ],
+            [
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+                "cell mobile number"
+            ],
+            [
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+            ],
+            [
+                1,
+                "login name"
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+            [
+                1,
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+            [
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+                "student id"
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ],
+            [
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+            [
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+                "date to"
+            ],
+            [
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+            [
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+            [
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+                "registration date"
+            ],
+            [
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+            [
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+            [
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+            ],
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "qualification"
+            ],
+            [
+                8,
+                "assessment date"
+            ],
+            [
+                8,
+                "asessment outcome code"
+            ]
+        ],
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+            ],
+            [
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+            ],
+            [
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+                "line_1"
+            ],
+            [
+                0,
+                "line_2"
+            ],
+            [
+                0,
+                "city"
+            ],
+            [
+                0,
+                "zip_postcode"
+            ],
+            [
+                0,
+                "state_province_county"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
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+                "person_id"
+            ],
+            [
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+                "first_name"
+            ],
+            [
+                1,
+                "middle_name"
+            ],
+            [
+                1,
+                "last_name"
+            ],
+            [
+                1,
+                "cell_mobile_number"
+            ],
+            [
+                1,
+                "email_address"
+            ],
+            [
+                1,
+                "login_name"
+            ],
+            [
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+                "password"
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+            [
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+            ],
+            [
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+            ],
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+            ],
+            [
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+            ],
+            [
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+                "course_description"
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+            [
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+                "other_details"
+            ],
+            [
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+            ],
+            [
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+                "person_id"
+            ],
+            [
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+                "address_id"
+            ],
+            [
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+                "date_from"
+            ],
+            [
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+                "date_to"
+            ],
+            [
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+                "student_id"
+            ],
+            [
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+                "course_id"
+            ],
+            [
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+                "registration_date"
+            ],
+            [
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+                "student_id"
+            ],
+            [
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+                "course_id"
+            ],
+            [
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+                "date_of_attendance"
+            ],
+            [
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+                "candidate_id"
+            ],
+            [
+                7,
+                "candidate_details"
+            ],
+            [
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+                "candidate_id"
+            ],
+            [
+                8,
+                "qualification"
+            ],
+            [
+                8,
+                "assessment_date"
+            ],
+            [
+                8,
+                "asessment_outcome_code"
+            ]
+        ],
+        "column_types": [
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+            "number",
+            "text",
+            "text",
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+            "text",
+            "text",
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+            "time",
+            "number",
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+            "time",
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+            ],
+            [
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+                1
+            ],
+            [
+                23,
+                8
+            ],
+            [
+                28,
+                18
+            ],
+            [
+                27,
+                16
+            ],
+            [
+                30,
+                27
+            ],
+            [
+                31,
+                28
+            ],
+            [
+                33,
+                8
+            ],
+            [
+                35,
+                33
+            ]
+        ],
+        "primary_keys": [
+            1,
+            8,
+            16,
+            18,
+            22,
+            27,
+            30,
+            33,
+            35
+        ],
+        "table_names": [
+            "addresses",
+            "people",
+            "students",
+            "courses",
+            "people addresses",
+            "student course registrations",
+            "student course attendance",
+            "candidates",
+            "candidate assessments"
+        ],
+        "table_names_original": [
+            "Addresses",
+            "People",
+            "Students",
+            "Courses",
+            "People_Addresses",
+            "Student_Course_Registrations",
+            "Student_Course_Attendance",
+            "Candidates",
+            "Candidate_Assessments"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "breed code"
+            ],
+            [
+                0,
+                "breed name"
+            ],
+            [
+                1,
+                "charge id"
+            ],
+            [
+                1,
+                "charge type"
+            ],
+            [
+                1,
+                "charge amount"
+            ],
+            [
+                2,
+                "size code"
+            ],
+            [
+                2,
+                "size description"
+            ],
+            [
+                3,
+                "treatment type code"
+            ],
+            [
+                3,
+                "treatment type description"
+            ],
+            [
+                4,
+                "owner id"
+            ],
+            [
+                4,
+                "first name"
+            ],
+            [
+                4,
+                "last name"
+            ],
+            [
+                4,
+                "street"
+            ],
+            [
+                4,
+                "city"
+            ],
+            [
+                4,
+                "state"
+            ],
+            [
+                4,
+                "zip code"
+            ],
+            [
+                4,
+                "email address"
+            ],
+            [
+                4,
+                "home phone"
+            ],
+            [
+                4,
+                "cell number"
+            ],
+            [
+                5,
+                "dog id"
+            ],
+            [
+                5,
+                "owner id"
+            ],
+            [
+                5,
+                "abandoned yes or no"
+            ],
+            [
+                5,
+                "breed code"
+            ],
+            [
+                5,
+                "size code"
+            ],
+            [
+                5,
+                "name"
+            ],
+            [
+                5,
+                "age"
+            ],
+            [
+                5,
+                "date of birth"
+            ],
+            [
+                5,
+                "gender"
+            ],
+            [
+                5,
+                "weight"
+            ],
+            [
+                5,
+                "date arrived"
+            ],
+            [
+                5,
+                "date adopted"
+            ],
+            [
+                5,
+                "date departed"
+            ],
+            [
+                6,
+                "professional id"
+            ],
+            [
+                6,
+                "role code"
+            ],
+            [
+                6,
+                "first name"
+            ],
+            [
+                6,
+                "street"
+            ],
+            [
+                6,
+                "city"
+            ],
+            [
+                6,
+                "state"
+            ],
+            [
+                6,
+                "zip code"
+            ],
+            [
+                6,
+                "last name"
+            ],
+            [
+                6,
+                "email address"
+            ],
+            [
+                6,
+                "home phone"
+            ],
+            [
+                6,
+                "cell number"
+            ],
+            [
+                7,
+                "treatment id"
+            ],
+            [
+                7,
+                "dog id"
+            ],
+            [
+                7,
+                "professional id"
+            ],
+            [
+                7,
+                "treatment type code"
+            ],
+            [
+                7,
+                "date of treatment"
+            ],
+            [
+                7,
+                "cost of treatment"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "breed_code"
+            ],
+            [
+                0,
+                "breed_name"
+            ],
+            [
+                1,
+                "charge_id"
+            ],
+            [
+                1,
+                "charge_type"
+            ],
+            [
+                1,
+                "charge_amount"
+            ],
+            [
+                2,
+                "size_code"
+            ],
+            [
+                2,
+                "size_description"
+            ],
+            [
+                3,
+                "treatment_type_code"
+            ],
+            [
+                3,
+                "treatment_type_description"
+            ],
+            [
+                4,
+                "owner_id"
+            ],
+            [
+                4,
+                "first_name"
+            ],
+            [
+                4,
+                "last_name"
+            ],
+            [
+                4,
+                "street"
+            ],
+            [
+                4,
+                "city"
+            ],
+            [
+                4,
+                "state"
+            ],
+            [
+                4,
+                "zip_code"
+            ],
+            [
+                4,
+                "email_address"
+            ],
+            [
+                4,
+                "home_phone"
+            ],
+            [
+                4,
+                "cell_number"
+            ],
+            [
+                5,
+                "dog_id"
+            ],
+            [
+                5,
+                "owner_id"
+            ],
+            [
+                5,
+                "abandoned_yn"
+            ],
+            [
+                5,
+                "breed_code"
+            ],
+            [
+                5,
+                "size_code"
+            ],
+            [
+                5,
+                "name"
+            ],
+            [
+                5,
+                "age"
+            ],
+            [
+                5,
+                "date_of_birth"
+            ],
+            [
+                5,
+                "gender"
+            ],
+            [
+                5,
+                "weight"
+            ],
+            [
+                5,
+                "date_arrived"
+            ],
+            [
+                5,
+                "date_adopted"
+            ],
+            [
+                5,
+                "date_departed"
+            ],
+            [
+                6,
+                "professional_id"
+            ],
+            [
+                6,
+                "role_code"
+            ],
+            [
+                6,
+                "first_name"
+            ],
+            [
+                6,
+                "street"
+            ],
+            [
+                6,
+                "city"
+            ],
+            [
+                6,
+                "state"
+            ],
+            [
+                6,
+                "zip_code"
+            ],
+            [
+                6,
+                "last_name"
+            ],
+            [
+                6,
+                "email_address"
+            ],
+            [
+                6,
+                "home_phone"
+            ],
+            [
+                6,
+                "cell_number"
+            ],
+            [
+                7,
+                "treatment_id"
+            ],
+            [
+                7,
+                "dog_id"
+            ],
+            [
+                7,
+                "professional_id"
+            ],
+            [
+                7,
+                "treatment_type_code"
+            ],
+            [
+                7,
+                "date_of_treatment"
+            ],
+            [
+                7,
+                "cost_of_treatment"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "time",
+            "text",
+            "text",
+            "time",
+            "time",
+            "time",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "text",
+            "time",
+            "number"
+        ],
+        "db_id": "dog_kennels",
+        "foreign_keys": [
+            [
+                21,
+                10
+            ],
+            [
+                21,
+                10
+            ],
+            [
+                24,
+                6
+            ],
+            [
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+                1
+            ],
+            [
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+                20
+            ],
+            [
+                46,
+                33
+            ],
+            [
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+                8
+            ]
+        ],
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+            3,
+            6,
+            8,
+            10,
+            20,
+            33,
+            44
+        ],
+        "table_names": [
+            "breeds",
+            "charges",
+            "sizes",
+            "treatment types",
+            "owners",
+            "dogs",
+            "professionals",
+            "treatments"
+        ],
+        "table_names_original": [
+            "Breeds",
+            "Charges",
+            "Sizes",
+            "Treatment_Types",
+            "Owners",
+            "Dogs",
+            "Professionals",
+            "Treatments"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "genre name"
+            ],
+            [
+                0,
+                "rating"
+            ],
+            [
+                0,
+                "most popular in"
+            ],
+            [
+                1,
+                "artist name"
+            ],
+            [
+                1,
+                "country"
+            ],
+            [
+                1,
+                "gender"
+            ],
+            [
+                1,
+                "preferred genre"
+            ],
+            [
+                2,
+                "song id"
+            ],
+            [
+                2,
+                "artist name"
+            ],
+            [
+                2,
+                "file size"
+            ],
+            [
+                2,
+                "duration"
+            ],
+            [
+                2,
+                "formats"
+            ],
+            [
+                3,
+                "song name"
+            ],
+            [
+                3,
+                "artist name"
+            ],
+            [
+                3,
+                "country"
+            ],
+            [
+                3,
+                "song id"
+            ],
+            [
+                3,
+                "genre is"
+            ],
+            [
+                3,
+                "rating"
+            ],
+            [
+                3,
+                "languages"
+            ],
+            [
+                3,
+                "releasedate"
+            ],
+            [
+                3,
+                "resolution"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "g_name"
+            ],
+            [
+                0,
+                "rating"
+            ],
+            [
+                0,
+                "most_popular_in"
+            ],
+            [
+                1,
+                "artist_name"
+            ],
+            [
+                1,
+                "country"
+            ],
+            [
+                1,
+                "gender"
+            ],
+            [
+                1,
+                "preferred_genre"
+            ],
+            [
+                2,
+                "f_id"
+            ],
+            [
+                2,
+                "artist_name"
+            ],
+            [
+                2,
+                "file_size"
+            ],
+            [
+                2,
+                "duration"
+            ],
+            [
+                2,
+                "formats"
+            ],
+            [
+                3,
+                "song_name"
+            ],
+            [
+                3,
+                "artist_name"
+            ],
+            [
+                3,
+                "country"
+            ],
+            [
+                3,
+                "f_id"
+            ],
+            [
+                3,
+                "genre_is"
+            ],
+            [
+                3,
+                "rating"
+            ],
+            [
+                3,
+                "languages"
+            ],
+            [
+                3,
+                "releasedate"
+            ],
+            [
+                3,
+                "resolution"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "time",
+            "number"
+        ],
+        "db_id": "music_1",
+        "foreign_keys": [
+            [
+                7,
+                1
+            ],
+            [
+                9,
+                4
+            ],
+            [
+                17,
+                1
+            ],
+            [
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+                8
+            ],
+            [
+                14,
+                4
+            ]
+        ],
+        "primary_keys": [
+            1,
+            4,
+            8,
+            13
+        ],
+        "table_names": [
+            "genre",
+            "artist",
+            "files",
+            "song"
+        ],
+        "table_names_original": [
+            "genre",
+            "artist",
+            "files",
+            "song"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "people id"
+            ],
+            [
+                0,
+                "age"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "nationality"
+            ],
+            [
+                0,
+                "graduation college"
+            ],
+            [
+                1,
+                "company id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "headquarters"
+            ],
+            [
+                1,
+                "industry"
+            ],
+            [
+                1,
+                "sales in billion"
+            ],
+            [
+                1,
+                "profits in billion"
+            ],
+            [
+                1,
+                "assets in billion"
+            ],
+            [
+                1,
+                "market value in billion"
+            ],
+            [
+                2,
+                "company id"
+            ],
+            [
+                2,
+                "people id"
+            ],
+            [
+                2,
+                "year working"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "People_ID"
+            ],
+            [
+                0,
+                "Age"
+            ],
+            [
+                0,
+                "Name"
+            ],
+            [
+                0,
+                "Nationality"
+            ],
+            [
+                0,
+                "Graduation_College"
+            ],
+            [
+                1,
+                "Company_ID"
+            ],
+            [
+                1,
+                "Name"
+            ],
+            [
+                1,
+                "Headquarters"
+            ],
+            [
+                1,
+                "Industry"
+            ],
+            [
+                1,
+                "Sales_in_Billion"
+            ],
+            [
+                1,
+                "Profits_in_Billion"
+            ],
+            [
+                1,
+                "Assets_in_Billion"
+            ],
+            [
+                1,
+                "Market_Value_in_Billion"
+            ],
+            [
+                2,
+                "Company_ID"
+            ],
+            [
+                2,
+                "People_ID"
+            ],
+            [
+                2,
+                "Year_working"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "company_employee",
+        "foreign_keys": [
+            [
+                15,
+                1
+            ],
+            [
+                14,
+                6
+            ]
+        ],
+        "primary_keys": [
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+            6,
+            14
+        ],
+        "table_names": [
+            "people",
+            "company",
+            "employment"
+        ],
+        "table_names_original": [
+            "people",
+            "company",
+            "employment"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "city id"
+            ],
+            [
+                0,
+                "official name"
+            ],
+            [
+                0,
+                "status"
+            ],
+            [
+                0,
+                "area km 2"
+            ],
+            [
+                0,
+                "population"
+            ],
+            [
+                0,
+                "census ranking"
+            ],
+            [
+                1,
+                "farm id"
+            ],
+            [
+                1,
+                "year"
+            ],
+            [
+                1,
+                "total horses"
+            ],
+            [
+                1,
+                "working horses"
+            ],
+            [
+                1,
+                "total cattle"
+            ],
+            [
+                1,
+                "oxen"
+            ],
+            [
+                1,
+                "bulls"
+            ],
+            [
+                1,
+                "cows"
+            ],
+            [
+                1,
+                "pigs"
+            ],
+            [
+                1,
+                "sheep and goats"
+            ],
+            [
+                2,
+                "competition id"
+            ],
+            [
+                2,
+                "year"
+            ],
+            [
+                2,
+                "theme"
+            ],
+            [
+                2,
+                "host city id"
+            ],
+            [
+                2,
+                "hosts"
+            ],
+            [
+                3,
+                "competition id"
+            ],
+            [
+                3,
+                "farm id"
+            ],
+            [
+                3,
+                "rank"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "City_ID"
+            ],
+            [
+                0,
+                "Official_Name"
+            ],
+            [
+                0,
+                "Status"
+            ],
+            [
+                0,
+                "Area_km_2"
+            ],
+            [
+                0,
+                "Population"
+            ],
+            [
+                0,
+                "Census_Ranking"
+            ],
+            [
+                1,
+                "Farm_ID"
+            ],
+            [
+                1,
+                "Year"
+            ],
+            [
+                1,
+                "Total_Horses"
+            ],
+            [
+                1,
+                "Working_Horses"
+            ],
+            [
+                1,
+                "Total_Cattle"
+            ],
+            [
+                1,
+                "Oxen"
+            ],
+            [
+                1,
+                "Bulls"
+            ],
+            [
+                1,
+                "Cows"
+            ],
+            [
+                1,
+                "Pigs"
+            ],
+            [
+                1,
+                "Sheep_and_Goats"
+            ],
+            [
+                2,
+                "Competition_ID"
+            ],
+            [
+                2,
+                "Year"
+            ],
+            [
+                2,
+                "Theme"
+            ],
+            [
+                2,
+                "Host_city_ID"
+            ],
+            [
+                2,
+                "Hosts"
+            ],
+            [
+                3,
+                "Competition_ID"
+            ],
+            [
+                3,
+                "Farm_ID"
+            ],
+            [
+                3,
+                "Rank"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "farm",
+        "foreign_keys": [
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+                1
+            ],
+            [
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+                7
+            ],
+            [
+                22,
+                17
+            ]
+        ],
+        "primary_keys": [
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+            7,
+            17,
+            22
+        ],
+        "table_names": [
+            "city",
+            "farm",
+            "farm competition",
+            "competition record"
+        ],
+        "table_names_original": [
+            "city",
+            "farm",
+            "farm_competition",
+            "competition_record"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "address id"
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+            [
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+            "nomination"
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+            "Has_Allergy",
+            "Student"
+        ]
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+            "genre",
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+            "company",
+            "director",
+            "producer",
+            "directed by",
+            "keyword",
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+            "written_by"
+        ]
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+            [
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+            [
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+            ],
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+            [
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+            ]
+        ],
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+            ],
+            [
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+            ],
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+            [
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+            [
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+                "amount_due"
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+            [
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+            [
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+                "product_id"
+            ],
+            [
+                5,
+                "returned_yn"
+            ],
+            [
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+                "returned_late_yn"
+            ],
+            [
+                5,
+                "booked_count"
+            ],
+            [
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+                "booked_amount"
+            ],
+            [
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+                "product_id"
+            ],
+            [
+                6,
+                "booking_id"
+            ],
+            [
+                6,
+                "status_date"
+            ],
+            [
+                6,
+                "available_yn"
+            ]
+        ],
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+            "number",
+            "time",
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+            "text",
+            "number",
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+            "number",
+            "number",
+            "time",
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+        ],
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+            ],
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+            28,
+            36,
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+        ],
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+            "customers",
+            "bookings",
+            "products for hire",
+            "payments",
+            "products booked",
+            "view product availability"
+        ],
+        "table_names_original": [
+            "Discount_Coupons",
+            "Customers",
+            "Bookings",
+            "Products_for_Hire",
+            "Payments",
+            "Products_Booked",
+            "View_Product_Availability"
+        ]
+    },
+    {
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+                "*"
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+            ],
+            [
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+            [
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+            [
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+            ],
+            [
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+            [
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+            [
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+            ],
+            [
+                0,
+                "People_ID"
+            ],
+            [
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+                "Poll_Source"
+            ],
+            [
+                0,
+                "Date"
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+            [
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+            ],
+            [
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+                "Consider_rate"
+            ],
+            [
+                0,
+                "Oppose_rate"
+            ],
+            [
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+                "Unsure_rate"
+            ],
+            [
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+            [
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+            ],
+            [
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+            ],
+            [
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+                "Date_of_Birth"
+            ],
+            [
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+                "Height"
+            ],
+            [
+                1,
+                "Weight"
+            ]
+        ],
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+            "number",
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+            "number",
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+                9
+            ]
+        ],
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+            9
+        ],
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+            "people"
+        ],
+        "table_names_original": [
+            "candidate",
+            "people"
+        ]
+    },
+    {
+        "column_names": [
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+                -1,
+                "*"
+            ],
+            [
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+                "album id"
+            ],
+            [
+                0,
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+            ],
+            [
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+                "artist id"
+            ],
+            [
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+            [
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+            ],
+            [
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+            [
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+            ],
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+                "company"
+            ],
+            [
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+            ],
+            [
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+            [
+                2,
+                "state"
+            ],
+            [
+                2,
+                "country"
+            ],
+            [
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+            ],
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+            [
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+            ],
+            [
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+            [
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+            ],
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+            ],
+            [
+                3,
+                "last name"
+            ],
+            [
+                3,
+                "first name"
+            ],
+            [
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+                "title"
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+            [
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+            ],
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            [
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+                "state"
+            ],
+            [
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+                "country"
+            ],
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+                "postal code"
+            ],
+            [
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+            ],
+            [
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+                "fax"
+            ],
+            [
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+            ],
+            [
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+                "genre id"
+            ],
+            [
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+                "name"
+            ],
+            [
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+            [
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+                "customer id"
+            ],
+            [
+                5,
+                "invoice date"
+            ],
+            [
+                5,
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+            ],
+            [
+                5,
+                "billing city"
+            ],
+            [
+                5,
+                "billing state"
+            ],
+            [
+                5,
+                "billing country"
+            ],
+            [
+                5,
+                "billing postal code"
+            ],
+            [
+                5,
+                "total"
+            ],
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+            ],
+            [
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ],
+            [
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+        ],
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+            ],
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+            ],
+            [
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+            ],
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+                "City"
+            ],
+            [
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+            ],
+            [
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+            [
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+            [
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+            ],
+            [
+                2,
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+            ],
+            [
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+            ],
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+            ],
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+            ],
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+            [
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+            [
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+            ],
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "BillingPostalCode"
+            ],
+            [
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+            ],
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            [
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+            ]
+        ],
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+        ],
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+            "employee",
+            "genre",
+            "invoice",
+            "invoice line",
+            "media type",
+            "playlist",
+            "playlist track",
+            "track"
+        ],
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+            "Artist",
+            "Customer",
+            "Employee",
+            "Genre",
+            "Invoice",
+            "InvoiceLine",
+            "MediaType",
+            "Playlist",
+            "PlaylistTrack",
+            "Track"
+        ]
+    },
+    {
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+            ],
+            [
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+            ],
+            [
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+                "destination airport"
+            ],
+            [
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+                "source airport id"
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+            [
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+            [
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+            ],
+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+        ],
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+            ]
+        ],
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+            18
+        ],
+        "table_names": [
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+            "airlines"
+        ],
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+            "routes",
+            "airports",
+            "airlines"
+        ]
+    },
+    {
+        "column_names": [
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+                "*"
+            ],
+            [
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+            ],
+            [
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+            "Pets"
+        ]
+    },
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+                "service_type_code"
+            ],
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+            ],
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+            ],
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+            ],
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+            ],
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+                7
+            ],
+            [
+                26,
+                20
+            ],
+            [
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+                15
+            ]
+        ],
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+            1,
+            4,
+            7,
+            12,
+            15,
+            20
+        ],
+        "table_names": [
+            "customers",
+            "invoices",
+            "orders",
+            "products",
+            "order items",
+            "shipments",
+            "shipment items"
+        ],
+        "table_names_original": [
+            "Customers",
+            "Invoices",
+            "Orders",
+            "Products",
+            "Order_Items",
+            "Shipments",
+            "Shipment_Items"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "customer id"
+            ],
+            [
+                0,
+                "customer details"
+            ],
+            [
+                1,
+                "policy id"
+            ],
+            [
+                1,
+                "customer id"
+            ],
+            [
+                1,
+                "policy type code"
+            ],
+            [
+                1,
+                "start date"
+            ],
+            [
+                1,
+                "end date"
+            ],
+            [
+                2,
+                "claim id"
+            ],
+            [
+                2,
+                "policy id"
+            ],
+            [
+                2,
+                "date claim made"
+            ],
+            [
+                2,
+                "date claim settled"
+            ],
+            [
+                2,
+                "amount claimed"
+            ],
+            [
+                2,
+                "amount settled"
+            ],
+            [
+                3,
+                "settlement id"
+            ],
+            [
+                3,
+                "claim id"
+            ],
+            [
+                3,
+                "date claim made"
+            ],
+            [
+                3,
+                "date claim settled"
+            ],
+            [
+                3,
+                "amount claimed"
+            ],
+            [
+                3,
+                "amount settled"
+            ],
+            [
+                3,
+                "customer policy id"
+            ],
+            [
+                4,
+                "payment id"
+            ],
+            [
+                4,
+                "settlement id"
+            ],
+            [
+                4,
+                "payment method code"
+            ],
+            [
+                4,
+                "date payment made"
+            ],
+            [
+                4,
+                "amount payment"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Customer_ID"
+            ],
+            [
+                0,
+                "Customer_Details"
+            ],
+            [
+                1,
+                "Policy_ID"
+            ],
+            [
+                1,
+                "Customer_ID"
+            ],
+            [
+                1,
+                "Policy_Type_Code"
+            ],
+            [
+                1,
+                "Start_Date"
+            ],
+            [
+                1,
+                "End_Date"
+            ],
+            [
+                2,
+                "Claim_ID"
+            ],
+            [
+                2,
+                "Policy_ID"
+            ],
+            [
+                2,
+                "Date_Claim_Made"
+            ],
+            [
+                2,
+                "Date_Claim_Settled"
+            ],
+            [
+                2,
+                "Amount_Claimed"
+            ],
+            [
+                2,
+                "Amount_Settled"
+            ],
+            [
+                3,
+                "Settlement_ID"
+            ],
+            [
+                3,
+                "Claim_ID"
+            ],
+            [
+                3,
+                "Date_Claim_Made"
+            ],
+            [
+                3,
+                "Date_Claim_Settled"
+            ],
+            [
+                3,
+                "Amount_Claimed"
+            ],
+            [
+                3,
+                "Amount_Settled"
+            ],
+            [
+                3,
+                "Customer_Policy_ID"
+            ],
+            [
+                4,
+                "Payment_ID"
+            ],
+            [
+                4,
+                "Settlement_ID"
+            ],
+            [
+                4,
+                "Payment_Method_Code"
+            ],
+            [
+                4,
+                "Date_Payment_Made"
+            ],
+            [
+                4,
+                "Amount_Payment"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "time",
+            "time",
+            "number",
+            "number",
+            "time",
+            "time",
+            "number",
+            "number",
+            "number",
+            "number",
+            "time",
+            "time",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "time",
+            "number"
+        ],
+        "db_id": "insurance_policies",
+        "foreign_keys": [
+            [
+                4,
+                1
+            ],
+            [
+                9,
+                3
+            ],
+            [
+                15,
+                8
+            ],
+            [
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+                14
+            ]
+        ],
+        "primary_keys": [
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+            3,
+            8,
+            14,
+            21
+        ],
+        "table_names": [
+            "customers",
+            "customer policies",
+            "claims",
+            "settlements",
+            "payments"
+        ],
+        "table_names_original": [
+            "Customers",
+            "Customer_Policies",
+            "Claims",
+            "Settlements",
+            "Payments"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "company id"
+            ],
+            [
+                0,
+                "rank"
+            ],
+            [
+                0,
+                "company"
+            ],
+            [
+                0,
+                "headquarters"
+            ],
+            [
+                0,
+                "main industry"
+            ],
+            [
+                0,
+                "sales billion"
+            ],
+            [
+                0,
+                "profits billion"
+            ],
+            [
+                0,
+                "assets billion"
+            ],
+            [
+                0,
+                "market value"
+            ],
+            [
+                1,
+                "station id"
+            ],
+            [
+                1,
+                "open year"
+            ],
+            [
+                1,
+                "location"
+            ],
+            [
+                1,
+                "manager name"
+            ],
+            [
+                1,
+                "vice manager name"
+            ],
+            [
+                1,
+                "representative name"
+            ],
+            [
+                2,
+                "station id"
+            ],
+            [
+                2,
+                "company id"
+            ],
+            [
+                2,
+                "rank of the year"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Company_ID"
+            ],
+            [
+                0,
+                "Rank"
+            ],
+            [
+                0,
+                "Company"
+            ],
+            [
+                0,
+                "Headquarters"
+            ],
+            [
+                0,
+                "Main_Industry"
+            ],
+            [
+                0,
+                "Sales_billion"
+            ],
+            [
+                0,
+                "Profits_billion"
+            ],
+            [
+                0,
+                "Assets_billion"
+            ],
+            [
+                0,
+                "Market_Value"
+            ],
+            [
+                1,
+                "Station_ID"
+            ],
+            [
+                1,
+                "Open_Year"
+            ],
+            [
+                1,
+                "Location"
+            ],
+            [
+                1,
+                "Manager_Name"
+            ],
+            [
+                1,
+                "Vice_Manager_Name"
+            ],
+            [
+                1,
+                "Representative_Name"
+            ],
+            [
+                2,
+                "Station_ID"
+            ],
+            [
+                2,
+                "Company_ID"
+            ],
+            [
+                2,
+                "Rank_of_the_Year"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "gas_company",
+        "foreign_keys": [
+            [
+                17,
+                1
+            ],
+            [
+                16,
+                10
+            ]
+        ],
+        "primary_keys": [
+            1,
+            10,
+            16
+        ],
+        "table_names": [
+            "company",
+            "gas station",
+            "station company"
+        ],
+        "table_names_original": [
+            "company",
+            "gas_station",
+            "station_company"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "address id"
+            ],
+            [
+                0,
+                "line 1 number building"
+            ],
+            [
+                0,
+                "town city"
+            ],
+            [
+                0,
+                "zip postcode"
+            ],
+            [
+                0,
+                "state province county"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "service id"
+            ],
+            [
+                1,
+                "service type code"
+            ],
+            [
+                1,
+                "service name"
+            ],
+            [
+                1,
+                "service descriptio"
+            ],
+            [
+                2,
+                "form id"
+            ],
+            [
+                2,
+                "form type code"
+            ],
+            [
+                2,
+                "service id"
+            ],
+            [
+                2,
+                "form number"
+            ],
+            [
+                2,
+                "form name"
+            ],
+            [
+                2,
+                "form description"
+            ],
+            [
+                3,
+                "individual id"
+            ],
+            [
+                3,
+                "individual first name"
+            ],
+            [
+                3,
+                "individual middle name"
+            ],
+            [
+                3,
+                "inidividual phone"
+            ],
+            [
+                3,
+                "individual email"
+            ],
+            [
+                3,
+                "individual address"
+            ],
+            [
+                3,
+                "individual last name"
+            ],
+            [
+                4,
+                "organization id"
+            ],
+            [
+                4,
+                "date formed"
+            ],
+            [
+                4,
+                "organization name"
+            ],
+            [
+                4,
+                "uk vat number"
+            ],
+            [
+                5,
+                "party id"
+            ],
+            [
+                5,
+                "payment method code"
+            ],
+            [
+                5,
+                "party phone"
+            ],
+            [
+                5,
+                "party email"
+            ],
+            [
+                6,
+                "individual id"
+            ],
+            [
+                6,
+                "organization id"
+            ],
+            [
+                6,
+                "date contact from"
+            ],
+            [
+                6,
+                "date contact to"
+            ],
+            [
+                7,
+                "party id"
+            ],
+            [
+                7,
+                "address id"
+            ],
+            [
+                7,
+                "date address from"
+            ],
+            [
+                7,
+                "address type code"
+            ],
+            [
+                7,
+                "date address to"
+            ],
+            [
+                8,
+                "party id"
+            ],
+            [
+                8,
+                "form id"
+            ],
+            [
+                8,
+                "date completion started"
+            ],
+            [
+                8,
+                "form status code"
+            ],
+            [
+                8,
+                "date fully completed"
+            ],
+            [
+                9,
+                "booking id"
+            ],
+            [
+                9,
+                "customer id"
+            ],
+            [
+                9,
+                "service id"
+            ],
+            [
+                9,
+                "service datetime"
+            ],
+            [
+                9,
+                "booking made date"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "address_id"
+            ],
+            [
+                0,
+                "line_1_number_building"
+            ],
+            [
+                0,
+                "town_city"
+            ],
+            [
+                0,
+                "zip_postcode"
+            ],
+            [
+                0,
+                "state_province_county"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "service_id"
+            ],
+            [
+                1,
+                "service_type_code"
+            ],
+            [
+                1,
+                "service_name"
+            ],
+            [
+                1,
+                "service_descriptio"
+            ],
+            [
+                2,
+                "form_id"
+            ],
+            [
+                2,
+                "form_type_code"
+            ],
+            [
+                2,
+                "service_id"
+            ],
+            [
+                2,
+                "form_number"
+            ],
+            [
+                2,
+                "form_name"
+            ],
+            [
+                2,
+                "form_description"
+            ],
+            [
+                3,
+                "individual_id"
+            ],
+            [
+                3,
+                "individual_first_name"
+            ],
+            [
+                3,
+                "individual_middle_name"
+            ],
+            [
+                3,
+                "inidividual_phone"
+            ],
+            [
+                3,
+                "individual_email"
+            ],
+            [
+                3,
+                "individual_address"
+            ],
+            [
+                3,
+                "individual_last_name"
+            ],
+            [
+                4,
+                "organization_id"
+            ],
+            [
+                4,
+                "date_formed"
+            ],
+            [
+                4,
+                "organization_name"
+            ],
+            [
+                4,
+                "uk_vat_number"
+            ],
+            [
+                5,
+                "party_id"
+            ],
+            [
+                5,
+                "payment_method_code"
+            ],
+            [
+                5,
+                "party_phone"
+            ],
+            [
+                5,
+                "party_email"
+            ],
+            [
+                6,
+                "individual_id"
+            ],
+            [
+                6,
+                "organization_id"
+            ],
+            [
+                6,
+                "date_contact_from"
+            ],
+            [
+                6,
+                "date_contact_to"
+            ],
+            [
+                7,
+                "party_id"
+            ],
+            [
+                7,
+                "address_id"
+            ],
+            [
+                7,
+                "date_address_from"
+            ],
+            [
+                7,
+                "address_type_code"
+            ],
+            [
+                7,
+                "date_address_to"
+            ],
+            [
+                8,
+                "party_id"
+            ],
+            [
+                8,
+                "form_id"
+            ],
+            [
+                8,
+                "date_completion_started"
+            ],
+            [
+                8,
+                "form_status_code"
+            ],
+            [
+                8,
+                "date_fully_completed"
+            ],
+            [
+                9,
+                "booking_id"
+            ],
+            [
+                9,
+                "customer_id"
+            ],
+            [
+                9,
+                "service_id"
+            ],
+            [
+                9,
+                "service_datetime"
+            ],
+            [
+                9,
+                "booking_made_date"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "time",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "time",
+            "time",
+            "number",
+            "number",
+            "time",
+            "text",
+            "time",
+            "number",
+            "number",
+            "time",
+            "text",
+            "time",
+            "number",
+            "number",
+            "number",
+            "time",
+            "time"
+        ],
+        "db_id": "e_government",
+        "foreign_keys": [
+            [
+                13,
+                7
+            ],
+            [
+                32,
+                17
+            ],
+            [
+                33,
+                24
+            ],
+            [
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+                28
+            ],
+            [
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+                1
+            ],
+            [
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+                11
+            ],
+            [
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+                28
+            ],
+            [
+                47,
+                28
+            ],
+            [
+                48,
+                7
+            ]
+        ],
+        "primary_keys": [
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+            7,
+            11,
+            17,
+            24,
+            28,
+            32,
+            36,
+            41
+        ],
+        "table_names": [
+            "addresses",
+            "services",
+            "forms",
+            "individuals",
+            "organizations",
+            "parties",
+            "organization contact individuals",
+            "party addresses",
+            "party forms",
+            "party services"
+        ],
+        "table_names_original": [
+            "Addresses",
+            "Services",
+            "Forms",
+            "Individuals",
+            "Organizations",
+            "Parties",
+            "Organization_Contact_Individuals",
+            "Party_Addresses",
+            "Party_Forms",
+            "Party_Services"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "driver id"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "party"
+            ],
+            [
+                0,
+                "home city"
+            ],
+            [
+                0,
+                "age"
+            ],
+            [
+                1,
+                "school id"
+            ],
+            [
+                1,
+                "grade"
+            ],
+            [
+                1,
+                "school"
+            ],
+            [
+                1,
+                "location"
+            ],
+            [
+                1,
+                "type"
+            ],
+            [
+                2,
+                "school id"
+            ],
+            [
+                2,
+                "driver id"
+            ],
+            [
+                2,
+                "years working"
+            ],
+            [
+                2,
+                "if full time"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Driver_ID"
+            ],
+            [
+                0,
+                "Name"
+            ],
+            [
+                0,
+                "Party"
+            ],
+            [
+                0,
+                "Home_city"
+            ],
+            [
+                0,
+                "Age"
+            ],
+            [
+                1,
+                "School_ID"
+            ],
+            [
+                1,
+                "Grade"
+            ],
+            [
+                1,
+                "School"
+            ],
+            [
+                1,
+                "Location"
+            ],
+            [
+                1,
+                "Type"
+            ],
+            [
+                2,
+                "School_ID"
+            ],
+            [
+                2,
+                "Driver_ID"
+            ],
+            [
+                2,
+                "Years_Working"
+            ],
+            [
+                2,
+                "If_full_time"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "others"
+        ],
+        "db_id": "school_bus",
+        "foreign_keys": [
+            [
+                12,
+                1
+            ],
+            [
+                11,
+                6
+            ]
+        ],
+        "primary_keys": [
+            1,
+            6,
+            11
+        ],
+        "table_names": [
+            "driver",
+            "school",
+            "school bus"
+        ],
+        "table_names_original": [
+            "driver",
+            "school",
+            "school_bus"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "repair id"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "launch date"
+            ],
+            [
+                0,
+                "notes"
+            ],
+            [
+                1,
+                "machine id"
+            ],
+            [
+                1,
+                "making year"
+            ],
+            [
+                1,
+                "class"
+            ],
+            [
+                1,
+                "team"
+            ],
+            [
+                1,
+                "machine series"
+            ],
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+        ],
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+            [
+                1,
+                "location"
+            ],
+            [
+                1,
+                "disposition_of_ship"
+            ],
+            [
+                2,
+                "caused_by_ship_id"
+            ],
+            [
+                2,
+                "id"
+            ],
+            [
+                2,
+                "note"
+            ],
+            [
+                2,
+                "killed"
+            ],
+            [
+                2,
+                "injured"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number"
+        ],
+        "db_id": "battle_death",
+        "foreign_keys": [
+            [
+                7,
+                1
+            ],
+            [
+                14,
+                8
+            ]
+        ],
+        "primary_keys": [
+            1,
+            8,
+            15
+        ],
+        "table_names": [
+            "battle",
+            "ship",
+            "death"
+        ],
+        "table_names_original": [
+            "battle",
+            "ship",
+            "death"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "document type code"
+            ],
+            [
+                0,
+                "document type description"
+            ],
+            [
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+                "role code"
+            ],
+            [
+                1,
+                "role description"
+            ],
+            [
+                2,
+                "address id"
+            ],
+            [
+                2,
+                "address details"
+            ],
+            [
+                3,
+                "document status code"
+            ],
+            [
+                3,
+                "document status description"
+            ],
+            [
+                4,
+                "shipping agent code"
+            ],
+            [
+                4,
+                "shipping agent name"
+            ],
+            [
+                4,
+                "shipping agent description"
+            ],
+            [
+                5,
+                "document id"
+            ],
+            [
+                5,
+                "document status code"
+            ],
+            [
+                5,
+                "document type code"
+            ],
+            [
+                5,
+                "shipping agent code"
+            ],
+            [
+                5,
+                "receipt date"
+            ],
+            [
+                5,
+                "receipt number"
+            ],
+            [
+                5,
+                "other details"
+            ],
+            [
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+            ],
+            [
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+                "role code"
+            ],
+            [
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+                "employee name"
+            ],
+            [
+                6,
+                "other details"
+            ],
+            [
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+                "document id"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "document id"
+            ],
+            [
+                8,
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+            [
+                8,
+                "copy number"
+            ],
+            [
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+            ],
+            [
+                9,
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+            ],
+            [
+                9,
+                "copy number"
+            ],
+            [
+                9,
+                "employee id"
+            ],
+            [
+                10,
+                "document id"
+            ],
+            [
+                10,
+                "mailed to address id"
+            ],
+            [
+                10,
+                "mailing date"
+            ]
+        ],
+        "column_names_original": [
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "document_type_code"
+            ],
+            [
+                0,
+                "document_type_description"
+            ],
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+                1,
+                "role_code"
+            ],
+            [
+                1,
+                "role_description"
+            ],
+            [
+                2,
+                "address_id"
+            ],
+            [
+                2,
+                "address_details"
+            ],
+            [
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+                "document_status_code"
+            ],
+            [
+                3,
+                "document_status_description"
+            ],
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+                "shipping_agent_code"
+            ],
+            [
+                4,
+                "shipping_agent_name"
+            ],
+            [
+                4,
+                "shipping_agent_description"
+            ],
+            [
+                5,
+                "document_id"
+            ],
+            [
+                5,
+                "document_status_code"
+            ],
+            [
+                5,
+                "document_type_code"
+            ],
+            [
+                5,
+                "shipping_agent_code"
+            ],
+            [
+                5,
+                "receipt_date"
+            ],
+            [
+                5,
+                "receipt_number"
+            ],
+            [
+                5,
+                "other_details"
+            ],
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+                "employee_id"
+            ],
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+            ],
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+                "employee_name"
+            ],
+            [
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+                "other_details"
+            ],
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+                "document_id"
+            ],
+            [
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+                "draft_number"
+            ],
+            [
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+                "draft_details"
+            ],
+            [
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+                "document_id"
+            ],
+            [
+                8,
+                "draft_number"
+            ],
+            [
+                8,
+                "copy_number"
+            ],
+            [
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+                "document_id"
+            ],
+            [
+                9,
+                "draft_number"
+            ],
+            [
+                9,
+                "copy_number"
+            ],
+            [
+                9,
+                "employee_id"
+            ],
+            [
+                10,
+                "document_id"
+            ],
+            [
+                10,
+                "mailed_to_address_id"
+            ],
+            [
+                10,
+                "mailing_date"
+            ]
+        ],
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+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
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+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "time"
+        ],
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+        "foreign_keys": [
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+                9
+            ],
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+                7
+            ],
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+                1
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+                3
+            ],
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+            ],
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+            ],
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+            ],
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+                5
+            ],
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+            ]
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+            7,
+            9,
+            12,
+            19,
+            23,
+            26,
+            29,
+            33
+        ],
+        "table_names": [
+            "reference document types",
+            "roles",
+            "addresses",
+            "reference document status",
+            "reference shipping agents",
+            "documents",
+            "employees",
+            "document drafts",
+            "draft copies",
+            "circulation history",
+            "documents mailed"
+        ],
+        "table_names_original": [
+            "Ref_Document_Types",
+            "Roles",
+            "Addresses",
+            "Ref_Document_Status",
+            "Ref_Shipping_Agents",
+            "Documents",
+            "Employees",
+            "Document_Drafts",
+            "Draft_Copies",
+            "Circulation_History",
+            "Documents_Mailed"
+        ]
+    },
+    {
+        "column_names": [
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+                -1,
+                "*"
+            ],
+            [
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+                "investor id"
+            ],
+            [
+                0,
+                "investor details"
+            ],
+            [
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+                "lot id"
+            ],
+            [
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+            ],
+            [
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+            [
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+                "transaction type code"
+            ],
+            [
+                2,
+                "transaction type description"
+            ],
+            [
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+                "transaction id"
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+            [
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+                "investor id"
+            ],
+            [
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+                "transaction type code"
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+            ],
+            [
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+                "amount of transaction"
+            ],
+            [
+                3,
+                "share count"
+            ],
+            [
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+            ],
+            [
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+                "sales transaction id"
+            ],
+            [
+                4,
+                "sales details"
+            ],
+            [
+                5,
+                "purchase transaction id"
+            ],
+            [
+                5,
+                "purchase details"
+            ],
+            [
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+                "transaction id"
+            ],
+            [
+                6,
+                "lot id"
+            ]
+        ],
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "investor_id"
+            ],
+            [
+                0,
+                "Investor_details"
+            ],
+            [
+                1,
+                "lot_id"
+            ],
+            [
+                1,
+                "investor_id"
+            ],
+            [
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+                "lot_details"
+            ],
+            [
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+                "transaction_type_code"
+            ],
+            [
+                2,
+                "transaction_type_description"
+            ],
+            [
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+                "transaction_id"
+            ],
+            [
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+                "investor_id"
+            ],
+            [
+                3,
+                "transaction_type_code"
+            ],
+            [
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+                "date_of_transaction"
+            ],
+            [
+                3,
+                "amount_of_transaction"
+            ],
+            [
+                3,
+                "share_count"
+            ],
+            [
+                3,
+                "other_details"
+            ],
+            [
+                4,
+                "sales_transaction_id"
+            ],
+            [
+                4,
+                "sales_details"
+            ],
+            [
+                5,
+                "purchase_transaction_id"
+            ],
+            [
+                5,
+                "purchase_details"
+            ],
+            [
+                6,
+                "transaction_id"
+            ],
+            [
+                6,
+                "lot_id"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "time",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number"
+        ],
+        "db_id": "tracking_share_transactions",
+        "foreign_keys": [
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+                4,
+                1
+            ],
+            [
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+                6
+            ],
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+                9,
+                1
+            ],
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+                8
+            ],
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+                8
+            ],
+            [
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+                8
+            ],
+            [
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+                3
+            ]
+        ],
+        "primary_keys": [
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+            3,
+            6,
+            8,
+            15
+        ],
+        "table_names": [
+            "investors",
+            "lots",
+            "reference transaction types",
+            "transactions",
+            "sales",
+            "purchases",
+            "transactions lots"
+        ],
+        "table_names_original": [
+            "Investors",
+            "Lots",
+            "Ref_Transaction_Types",
+            "Transactions",
+            "Sales",
+            "Purchases",
+            "Transactions_Lots"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "building id"
+            ],
+            [
+                0,
+                "building short name"
+            ],
+            [
+                0,
+                "building full name"
+            ],
+            [
+                0,
+                "building description"
+            ],
+            [
+                0,
+                "building address"
+            ],
+            [
+                0,
+                "building manager"
+            ],
+            [
+                0,
+                "building phone"
+            ],
+            [
+                1,
+                "apartment id"
+            ],
+            [
+                1,
+                "building id"
+            ],
+            [
+                1,
+                "apartment type code"
+            ],
+            [
+                1,
+                "apartment number"
+            ],
+            [
+                1,
+                "bathroom count"
+            ],
+            [
+                1,
+                "bedroom count"
+            ],
+            [
+                1,
+                "room count"
+            ],
+            [
+                2,
+                "apartment id"
+            ],
+            [
+                2,
+                "facility code"
+            ],
+            [
+                3,
+                "guest id"
+            ],
+            [
+                3,
+                "gender code"
+            ],
+            [
+                3,
+                "guest first name"
+            ],
+            [
+                3,
+                "guest last name"
+            ],
+            [
+                3,
+                "date of birth"
+            ],
+            [
+                4,
+                "apartment booking id"
+            ],
+            [
+                4,
+                "apartment id"
+            ],
+            [
+                4,
+                "guest id"
+            ],
+            [
+                4,
+                "booking status code"
+            ],
+            [
+                4,
+                "booking start date"
+            ],
+            [
+                4,
+                "booking end date"
+            ],
+            [
+                5,
+                "apartment id"
+            ],
+            [
+                5,
+                "apartment booking id"
+            ],
+            [
+                5,
+                "status date"
+            ],
+            [
+                5,
+                "available yes or no"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "building_id"
+            ],
+            [
+                0,
+                "building_short_name"
+            ],
+            [
+                0,
+                "building_full_name"
+            ],
+            [
+                0,
+                "building_description"
+            ],
+            [
+                0,
+                "building_address"
+            ],
+            [
+                0,
+                "building_manager"
+            ],
+            [
+                0,
+                "building_phone"
+            ],
+            [
+                1,
+                "apt_id"
+            ],
+            [
+                1,
+                "building_id"
+            ],
+            [
+                1,
+                "apt_type_code"
+            ],
+            [
+                1,
+                "apt_number"
+            ],
+            [
+                1,
+                "bathroom_count"
+            ],
+            [
+                1,
+                "bedroom_count"
+            ],
+            [
+                1,
+                "room_count"
+            ],
+            [
+                2,
+                "apt_id"
+            ],
+            [
+                2,
+                "facility_code"
+            ],
+            [
+                3,
+                "guest_id"
+            ],
+            [
+                3,
+                "gender_code"
+            ],
+            [
+                3,
+                "guest_first_name"
+            ],
+            [
+                3,
+                "guest_last_name"
+            ],
+            [
+                3,
+                "date_of_birth"
+            ],
+            [
+                4,
+                "apt_booking_id"
+            ],
+            [
+                4,
+                "apt_id"
+            ],
+            [
+                4,
+                "guest_id"
+            ],
+            [
+                4,
+                "booking_status_code"
+            ],
+            [
+                4,
+                "booking_start_date"
+            ],
+            [
+                4,
+                "booking_end_date"
+            ],
+            [
+                5,
+                "apt_id"
+            ],
+            [
+                5,
+                "apt_booking_id"
+            ],
+            [
+                5,
+                "status_date"
+            ],
+            [
+                5,
+                "available_yn"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "time",
+            "number",
+            "number",
+            "number",
+            "text",
+            "time",
+            "time",
+            "number",
+            "number",
+            "time",
+            "others"
+        ],
+        "db_id": "apartment_rentals",
+        "foreign_keys": [
+            [
+                9,
+                1
+            ],
+            [
+                15,
+                8
+            ],
+            [
+                24,
+                17
+            ],
+            [
+                23,
+                8
+            ],
+            [
+                29,
+                22
+            ],
+            [
+                28,
+                8
+            ]
+        ],
+        "primary_keys": [
+            1,
+            8,
+            15,
+            17,
+            22,
+            30
+        ],
+        "table_names": [
+            "apartment buildings",
+            "apartments",
+            "apartment facilities",
+            "guests",
+            "apartment bookings",
+            "view unit status"
+        ],
+        "table_names_original": [
+            "Apartment_Buildings",
+            "Apartments",
+            "Apartment_Facilities",
+            "Guests",
+            "Apartment_Bookings",
+            "View_Unit_Status"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "address id"
+            ],
+            [
+                0,
+                "line 1"
+            ],
+            [
+                0,
+                "line 2"
+            ],
+            [
+                0,
+                "line 3"
+            ],
+            [
+                0,
+                "city"
+            ],
+            [
+                0,
+                "zip postcode"
+            ],
+            [
+                0,
+                "state province county"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                0,
+                "other address details"
+            ],
+            [
+                1,
+                "course id"
+            ],
+            [
+                1,
+                "course name"
+            ],
+            [
+                1,
+                "course description"
+            ],
+            [
+                1,
+                "other details"
+            ],
+            [
+                2,
+                "department id"
+            ],
+            [
+                2,
+                "department name"
+            ],
+            [
+                2,
+                "department description"
+            ],
+            [
+                2,
+                "other details"
+            ],
+            [
+                3,
+                "degree program id"
+            ],
+            [
+                3,
+                "department id"
+            ],
+            [
+                3,
+                "degree summary name"
+            ],
+            [
+                3,
+                "degree summary description"
+            ],
+            [
+                3,
+                "other details"
+            ],
+            [
+                4,
+                "section id"
+            ],
+            [
+                4,
+                "course id"
+            ],
+            [
+                4,
+                "section name"
+            ],
+            [
+                4,
+                "section description"
+            ],
+            [
+                4,
+                "other details"
+            ],
+            [
+                5,
+                "semester id"
+            ],
+            [
+                5,
+                "semester name"
+            ],
+            [
+                5,
+                "semester description"
+            ],
+            [
+                5,
+                "other details"
+            ],
+            [
+                6,
+                "student id"
+            ],
+            [
+                6,
+                "current address id"
+            ],
+            [
+                6,
+                "permanent address id"
+            ],
+            [
+                6,
+                "first name"
+            ],
+            [
+                6,
+                "middle name"
+            ],
+            [
+                6,
+                "last name"
+            ],
+            [
+                6,
+                "cell mobile number"
+            ],
+            [
+                6,
+                "email address"
+            ],
+            [
+                6,
+                "ssn"
+            ],
+            [
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+            ],
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+            [
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+        ],
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+            "problem log",
+            "problem status codes",
+            "product",
+            "staff",
+            "problems"
+        ],
+        "table_names_original": [
+            "Problem_Category_Codes",
+            "Problem_Log",
+            "Problem_Status_Codes",
+            "Product",
+            "Staff",
+            "Problems"
+        ]
+    },
+    {
+        "column_names": [
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+                "*"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            [
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+            ],
+            [
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+                "unit of measure"
+            ],
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ],
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+            ],
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+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
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+            ],
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+            ],
+            [
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+            ],
+            [
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+                "product_characteristic_value"
+            ]
+        ],
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+            5,
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+            13
+        ],
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+            "reference colors",
+            "reference product categories",
+            "characteristics",
+            "products",
+            "product characteristics"
+        ],
+        "table_names_original": [
+            "Ref_Characteristic_Types",
+            "Ref_Colors",
+            "Ref_Product_Categories",
+            "Characteristics",
+            "Products",
+            "Product_Characteristics"
+        ]
+    },
+    {
+        "column_names": [
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+                "*"
+            ],
+            [
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+            ],
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+            ]
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+            ],
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+            ],
+            [
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+            ],
+            [
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+                "Num_of_staff"
+            ],
+            [
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+                "Score"
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+            [
+                0,
+                "Open_Year"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "Age"
+            ],
+            [
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+            ],
+            [
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+                "Level_of_membership"
+            ],
+            [
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+            ],
+            [
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+                "HH_ID"
+            ],
+            [
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+                "Shop_ID"
+            ],
+            [
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+            ],
+            [
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+                "Num_of_shaff_in_charge"
+            ],
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+                "HH_ID"
+            ],
+            [
+                3,
+                "Member_ID"
+            ],
+            [
+                3,
+                "Total_amount"
+            ]
+        ],
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+            "number",
+            "text",
+            "text",
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+            "number",
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+            "number",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "coffee_shop",
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+                1
+            ],
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+            ]
+        ],
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+            17
+        ],
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+            "happy hour",
+            "happy hour member"
+        ],
+        "table_names_original": [
+            "shop",
+            "member",
+            "happy_hour",
+            "happy_hour_member"
+        ]
+    },
+    {
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+                "*"
+            ],
+            [
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+                "player id"
+            ],
+            [
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+                "sponsor name"
+            ],
+            [
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+                "player name"
+            ],
+            [
+                0,
+                "gender"
+            ],
+            [
+                0,
+                "residence"
+            ],
+            [
+                0,
+                "occupation"
+            ],
+            [
+                0,
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+            ],
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+                "gender"
+            ],
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+            [
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+            ],
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+            ]
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+            ],
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+            ],
+            [
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+                "Sponsor_name"
+            ],
+            [
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+                "Player_name"
+            ],
+            [
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+                "Gender"
+            ],
+            [
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+                "Residence"
+            ],
+            [
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+            ],
+            [
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+            [
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+            [
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+            ],
+            [
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+            [
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+            [
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+                "Gender"
+            ],
+            [
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+            ],
+            [
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+                "Club_ID"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
+                4,
+                "Small_Silver"
+            ],
+            [
+                4,
+                "Bronze"
+            ],
+            [
+                4,
+                "Points"
+            ]
+        ],
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+            "number",
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+            "number"
+        ],
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+            ],
+            [
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+        ],
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+            "player coach",
+            "match result"
+        ],
+        "table_names_original": [
+            "player",
+            "club",
+            "coach",
+            "player_coach",
+            "match_result"
+        ]
+    },
+    {
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+                "*"
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+            ],
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+                "customer id"
+            ],
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+            ],
+            [
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+            ],
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+            [
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+            [
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+            [
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+            ],
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+            [
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+            ],
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+            ],
+            [
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+            ],
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+                "*"
+            ],
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+            ],
+            [
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+            ],
+            [
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+                "account_name"
+            ],
+            [
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+                "other_account_details"
+            ],
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "date_valid_to"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+                "account_id"
+            ],
+            [
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+                "card_id"
+            ],
+            [
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+                "transaction_type"
+            ],
+            [
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+            ],
+            [
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+                "transaction_amount"
+            ],
+            [
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+                "transaction_comment"
+            ],
+            [
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+            ]
+        ],
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+            "number",
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+            "number",
+            "number",
+            "text",
+            "time",
+            "number",
+            "text",
+            "text"
+        ],
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+                1
+            ],
+            [
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+            ]
+        ],
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+            12
+        ],
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+            "accounts",
+            "customers",
+            "customers cards",
+            "financial transactions"
+        ],
+        "table_names_original": [
+            "Accounts",
+            "Customers",
+            "Customers_Cards",
+            "Financial_Transactions"
+        ]
+    },
+    {
+        "column_names": [
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+                "*"
+            ],
+            [
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+                "county id"
+            ],
+            [
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+                "name"
+            ],
+            [
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+                "population"
+            ],
+            [
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+                "police officers"
+            ],
+            [
+                0,
+                "residents per officer"
+            ],
+            [
+                0,
+                "case burden"
+            ],
+            [
+                0,
+                "crime rate"
+            ],
+            [
+                0,
+                "police force"
+            ],
+            [
+                0,
+                "location"
+            ],
+            [
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+            ],
+            [
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+                "county id"
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+            [
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ]
+        ],
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+            [
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+            ],
+            [
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+                "Name"
+            ],
+            [
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+                "Population"
+            ],
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+            ],
+            [
+                1,
+                "People_ID"
+            ],
+            [
+                1,
+                "Nationality"
+            ],
+            [
+                1,
+                "Name"
+            ],
+            [
+                1,
+                "Birth_Date"
+            ],
+            [
+                1,
+                "Height"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number"
+        ],
+        "db_id": "poker_player",
+        "foreign_keys": [
+            [
+                2,
+                7
+            ]
+        ],
+        "primary_keys": [
+            1,
+            7
+        ],
+        "table_names": [
+            "poker player",
+            "people"
+        ],
+        "table_names_original": [
+            "poker_player",
+            "people"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "program id"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "origin"
+            ],
+            [
+                0,
+                "launch"
+            ],
+            [
+                0,
+                "owner"
+            ],
+            [
+                1,
+                "channel id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "owner"
+            ],
+            [
+                1,
+                "share in percent"
+            ],
+            [
+                1,
+                "rating in percent"
+            ],
+            [
+                2,
+                "channel id"
+            ],
+            [
+                2,
+                "program id"
+            ],
+            [
+                2,
+                "time of day"
+            ],
+            [
+                3,
+                "channel id"
+            ],
+            [
+                3,
+                "program id"
+            ],
+            [
+                3,
+                "date"
+            ],
+            [
+                3,
+                "share in percent"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Program_ID"
+            ],
+            [
+                0,
+                "Name"
+            ],
+            [
+                0,
+                "Origin"
+            ],
+            [
+                0,
+                "Launch"
+            ],
+            [
+                0,
+                "Owner"
+            ],
+            [
+                1,
+                "Channel_ID"
+            ],
+            [
+                1,
+                "Name"
+            ],
+            [
+                1,
+                "Owner"
+            ],
+            [
+                1,
+                "Share_in_percent"
+            ],
+            [
+                1,
+                "Rating_in_percent"
+            ],
+            [
+                2,
+                "Channel_ID"
+            ],
+            [
+                2,
+                "Program_ID"
+            ],
+            [
+                2,
+                "Time_of_day"
+            ],
+            [
+                3,
+                "Channel_ID"
+            ],
+            [
+                3,
+                "Program_ID"
+            ],
+            [
+                3,
+                "Date"
+            ],
+            [
+                3,
+                "Share_in_percent"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number"
+        ],
+        "db_id": "program_share",
+        "foreign_keys": [
+            [
+                12,
+                1
+            ],
+            [
+                11,
+                6
+            ],
+            [
+                15,
+                1
+            ],
+            [
+                14,
+                6
+            ]
+        ],
+        "primary_keys": [
+            1,
+            6,
+            11,
+            14
+        ],
+        "table_names": [
+            "program",
+            "channel",
+            "broadcast",
+            "broadcast share"
+        ],
+        "table_names_original": [
+            "program",
+            "channel",
+            "broadcast",
+            "broadcast_share"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "pilot id"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "age"
+            ],
+            [
+                1,
+                "aircraft id"
+            ],
+            [
+                1,
+                "aircraft"
+            ],
+            [
+                1,
+                "description"
+            ],
+            [
+                1,
+                "max gross weight"
+            ],
+            [
+                1,
+                "total disk area"
+            ],
+            [
+                1,
+                "max disk loading"
+            ],
+            [
+                2,
+                "round"
+            ],
+            [
+                2,
+                "location"
+            ],
+            [
+                2,
+                "country"
+            ],
+            [
+                2,
+                "date"
+            ],
+            [
+                2,
+                "fastest qualifying"
+            ],
+            [
+                2,
+                "winning pilot"
+            ],
+            [
+                2,
+                "winning aircraft"
+            ],
+            [
+                3,
+                "airport id"
+            ],
+            [
+                3,
+                "airport name"
+            ],
+            [
+                3,
+                "total passengers"
+            ],
+            [
+                3,
+                "% change 2007"
+            ],
+            [
+                3,
+                "international passengers"
+            ],
+            [
+                3,
+                "domestic passengers"
+            ],
+            [
+                3,
+                "transit passengers"
+            ],
+            [
+                3,
+                "aircraft movements"
+            ],
+            [
+                3,
+                "freight metric tonnes"
+            ],
+            [
+                4,
+                "id"
+            ],
+            [
+                4,
+                "airport id"
+            ],
+            [
+                4,
+                "aircraft id"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Pilot_Id"
+            ],
+            [
+                0,
+                "Name"
+            ],
+            [
+                0,
+                "Age"
+            ],
+            [
+                1,
+                "Aircraft_ID"
+            ],
+            [
+                1,
+                "Aircraft"
+            ],
+            [
+                1,
+                "Description"
+            ],
+            [
+                1,
+                "Max_Gross_Weight"
+            ],
+            [
+                1,
+                "Total_disk_area"
+            ],
+            [
+                1,
+                "Max_disk_Loading"
+            ],
+            [
+                2,
+                "Round"
+            ],
+            [
+                2,
+                "Location"
+            ],
+            [
+                2,
+                "Country"
+            ],
+            [
+                2,
+                "Date"
+            ],
+            [
+                2,
+                "Fastest_Qualifying"
+            ],
+            [
+                2,
+                "Winning_Pilot"
+            ],
+            [
+                2,
+                "Winning_Aircraft"
+            ],
+            [
+                3,
+                "Airport_ID"
+            ],
+            [
+                3,
+                "Airport_Name"
+            ],
+            [
+                3,
+                "Total_Passengers"
+            ],
+            [
+                3,
+                "%_Change_2007"
+            ],
+            [
+                3,
+                "International_Passengers"
+            ],
+            [
+                3,
+                "Domestic_Passengers"
+            ],
+            [
+                3,
+                "Transit_Passengers"
+            ],
+            [
+                3,
+                "Aircraft_Movements"
+            ],
+            [
+                3,
+                "Freight_Metric_Tonnes"
+            ],
+            [
+                4,
+                "ID"
+            ],
+            [
+                4,
+                "Airport_ID"
+            ],
+            [
+                4,
+                "Aircraft_ID"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "aircraft",
+        "foreign_keys": [
+            [
+                15,
+                1
+            ],
+            [
+                16,
+                4
+            ],
+            [
+                28,
+                4
+            ],
+            [
+                27,
+                17
+            ]
+        ],
+        "primary_keys": [
+            1,
+            4,
+            10,
+            17,
+            27
+        ],
+        "table_names": [
+            "pilot",
+            "aircraft",
+            "match",
+            "airport",
+            "airport aircraft"
+        ],
+        "table_names_original": [
+            "pilot",
+            "aircraft",
+            "match",
+            "airport",
+            "airport_aircraft"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "student id"
+            ],
+            [
+                0,
+                "last name"
+            ],
+            [
+                0,
+                "first name"
+            ],
+            [
+                0,
+                "age"
+            ],
+            [
+                0,
+                "sex"
+            ],
+            [
+                0,
+                "major"
+            ],
+            [
+                0,
+                "advisor"
+            ],
+            [
+                0,
+                "city code"
+            ],
+            [
+                1,
+                "restaurant id"
+            ],
+            [
+                1,
+                "restaurant name"
+            ],
+            [
+                1,
+                "address"
+            ],
+            [
+                1,
+                "rating"
+            ],
+            [
+                2,
+                "restaurant id"
+            ],
+            [
+                2,
+                "restaurant type id"
+            ],
+            [
+                3,
+                "restaurant type id"
+            ],
+            [
+                3,
+                "restaurant type name"
+            ],
+            [
+                3,
+                "restaurant type description"
+            ],
+            [
+                4,
+                "student id"
+            ],
+            [
+                4,
+                "restaurant id"
+            ],
+            [
+                4,
+                "time"
+            ],
+            [
+                4,
+                "spent"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "StuID"
+            ],
+            [
+                0,
+                "LName"
+            ],
+            [
+                0,
+                "Fname"
+            ],
+            [
+                0,
+                "Age"
+            ],
+            [
+                0,
+                "Sex"
+            ],
+            [
+                0,
+                "Major"
+            ],
+            [
+                0,
+                "Advisor"
+            ],
+            [
+                0,
+                "city_code"
+            ],
+            [
+                1,
+                "ResID"
+            ],
+            [
+                1,
+                "ResName"
+            ],
+            [
+                1,
+                "Address"
+            ],
+            [
+                1,
+                "Rating"
+            ],
+            [
+                2,
+                "ResID"
+            ],
+            [
+                2,
+                "ResTypeID"
+            ],
+            [
+                3,
+                "ResTypeID"
+            ],
+            [
+                3,
+                "ResTypeName"
+            ],
+            [
+                3,
+                "ResTypeDescription"
+            ],
+            [
+                4,
+                "StuID"
+            ],
+            [
+                4,
+                "ResID"
+            ],
+            [
+                4,
+                "Time"
+            ],
+            [
+                4,
+                "Spent"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "time",
+            "number"
+        ],
+        "db_id": "restaurant_1",
+        "foreign_keys": [
+            [
+                14,
+                15
+            ],
+            [
+                13,
+                9
+            ],
+            [
+                19,
+                9
+            ],
+            [
+                18,
+                1
+            ]
+        ],
+        "primary_keys": [
+            1,
+            9,
+            15
+        ],
+        "table_names": [
+            "student",
+            "restaurant",
+            "type of restaurant",
+            "restaurant type",
+            "visits restaurant"
+        ],
+        "table_names_original": [
+            "Student",
+            "Restaurant",
+            "Type_Of_Restaurant",
+            "Restaurant_Type",
+            "Visits_Restaurant"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "customer id"
+            ],
+            [
+                0,
+                "customer first name"
+            ],
+            [
+                0,
+                "customer middle initial"
+            ],
+            [
+                0,
+                "customer last name"
+            ],
+            [
+                0,
+                "gender"
+            ],
+            [
+                0,
+                "email address"
+            ],
+            [
+                0,
+                "login name"
+            ],
+            [
+                0,
+                "login password"
+            ],
+            [
+                0,
+                "phone number"
+            ],
+            [
+                0,
+                "town city"
+            ],
+            [
+                0,
+                "state county province"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "order id"
+            ],
+            [
+                1,
+                "customer id"
+            ],
+            [
+                1,
+                "date order placed"
+            ],
+            [
+                1,
+                "order details"
+            ],
+            [
+                2,
+                "invoice number"
+            ],
+            [
+                2,
+                "order id"
+            ],
+            [
+                2,
+                "invoice date"
+            ],
+            [
+                3,
+                "account id"
+            ],
+            [
+                3,
+                "customer id"
+            ],
+            [
+                3,
+                "date account opened"
+            ],
+            [
+                3,
+                "account name"
+            ],
+            [
+                3,
+                "other account details"
+            ],
+            [
+                4,
+                "production type code"
+            ],
+            [
+                4,
+                "product type description"
+            ],
+            [
+                4,
+                "vat rating"
+            ],
+            [
+                5,
+                "product id"
+            ],
+            [
+                5,
+                "parent product id"
+            ],
+            [
+                5,
+                "production type code"
+            ],
+            [
+                5,
+                "unit price"
+            ],
+            [
+                5,
+                "product name"
+            ],
+            [
+                5,
+                "product color"
+            ],
+            [
+                5,
+                "product size"
+            ],
+            [
+                6,
+                "transaction id"
+            ],
+            [
+                6,
+                "account id"
+            ],
+            [
+                6,
+                "invoice number"
+            ],
+            [
+                6,
+                "transaction type"
+            ],
+            [
+                6,
+                "transaction date"
+            ],
+            [
+                6,
+                "transaction amount"
+            ],
+            [
+                6,
+                "transaction comment"
+            ],
+            [
+                6,
+                "other transaction details"
+            ],
+            [
+                7,
+                "order item id"
+            ],
+            [
+                7,
+                "order id"
+            ],
+            [
+                7,
+                "product id"
+            ],
+            [
+                7,
+                "product quantity"
+            ],
+            [
+                7,
+                "other order item details"
+            ],
+            [
+                8,
+                "order item id"
+            ],
+            [
+                8,
+                "invoice number"
+            ],
+            [
+                8,
+                "product id"
+            ],
+            [
+                8,
+                "product title"
+            ],
+            [
+                8,
+                "product quantity"
+            ],
+            [
+                8,
+                "product price"
+            ],
+            [
+                8,
+                "derived product cost"
+            ],
+            [
+                8,
+                "derived vat payable"
+            ],
+            [
+                8,
+                "derived total cost"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "customer_id"
+            ],
+            [
+                0,
+                "customer_first_name"
+            ],
+            [
+                0,
+                "customer_middle_initial"
+            ],
+            [
+                0,
+                "customer_last_name"
+            ],
+            [
+                0,
+                "gender"
+            ],
+            [
+                0,
+                "email_address"
+            ],
+            [
+                0,
+                "login_name"
+            ],
+            [
+                0,
+                "login_password"
+            ],
+            [
+                0,
+                "phone_number"
+            ],
+            [
+                0,
+                "town_city"
+            ],
+            [
+                0,
+                "state_county_province"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "order_id"
+            ],
+            [
+                1,
+                "customer_id"
+            ],
+            [
+                1,
+                "date_order_placed"
+            ],
+            [
+                1,
+                "order_details"
+            ],
+            [
+                2,
+                "invoice_number"
+            ],
+            [
+                2,
+                "order_id"
+            ],
+            [
+                2,
+                "invoice_date"
+            ],
+            [
+                3,
+                "account_id"
+            ],
+            [
+                3,
+                "customer_id"
+            ],
+            [
+                3,
+                "date_account_opened"
+            ],
+            [
+                3,
+                "account_name"
+            ],
+            [
+                3,
+                "other_account_details"
+            ],
+            [
+                4,
+                "production_type_code"
+            ],
+            [
+                4,
+                "product_type_description"
+            ],
+            [
+                4,
+                "vat_rating"
+            ],
+            [
+                5,
+                "product_id"
+            ],
+            [
+                5,
+                "parent_product_id"
+            ],
+            [
+                5,
+                "production_type_code"
+            ],
+            [
+                5,
+                "unit_price"
+            ],
+            [
+                5,
+                "product_name"
+            ],
+            [
+                5,
+                "product_color"
+            ],
+            [
+                5,
+                "product_size"
+            ],
+            [
+                6,
+                "transaction_id"
+            ],
+            [
+                6,
+                "account_id"
+            ],
+            [
+                6,
+                "invoice_number"
+            ],
+            [
+                6,
+                "transaction_type"
+            ],
+            [
+                6,
+                "transaction_date"
+            ],
+            [
+                6,
+                "transaction_amount"
+            ],
+            [
+                6,
+                "transaction_comment"
+            ],
+            [
+                6,
+                "other_transaction_details"
+            ],
+            [
+                7,
+                "order_item_id"
+            ],
+            [
+                7,
+                "order_id"
+            ],
+            [
+                7,
+                "product_id"
+            ],
+            [
+                7,
+                "product_quantity"
+            ],
+            [
+                7,
+                "other_order_item_details"
+            ],
+            [
+                8,
+                "order_item_id"
+            ],
+            [
+                8,
+                "invoice_number"
+            ],
+            [
+                8,
+                "product_id"
+            ],
+            [
+                8,
+                "product_title"
+            ],
+            [
+                8,
+                "product_quantity"
+            ],
+            [
+                8,
+                "product_price"
+            ],
+            [
+                8,
+                "derived_product_cost"
+            ],
+            [
+                8,
+                "derived_vat_payable"
+            ],
+            [
+                8,
+                "derived_total_cost"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
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+            "text",
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+            "orders",
+            "invoices",
+            "accounts",
+            "product categories",
+            "products",
+            "financial transactions",
+            "order items",
+            "invoice line items"
+        ],
+        "table_names_original": [
+            "Customers",
+            "Orders",
+            "Invoices",
+            "Accounts",
+            "Product_Categories",
+            "Products",
+            "Financial_Transactions",
+            "Order_Items",
+            "Invoice_Line_Items"
+        ]
+    },
+    {
+        "column_names": [
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+                "*"
+            ],
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+            ],
+            [
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+            [
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+            ],
+            [
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+            [
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+                "end date"
+            ],
+            [
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+            ],
+            [
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+            [
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+            ],
+            [
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+            [
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+            ],
+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
+                4,
+                "created date"
+            ],
+            [
+                5,
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+            ],
+            [
+                5,
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+            ],
+            [
+                5,
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            [
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+            ],
+            [
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+                "claim stage id"
+            ],
+            [
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+                "staff id"
+            ]
+        ],
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+                "*"
+            ],
+            [
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+            ],
+            [
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+            ],
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+            [
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+                "Policy_ID"
+            ],
+            [
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+                "Customer_ID"
+            ],
+            [
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+                "Policy_Type_Code"
+            ],
+            [
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+                "Start_Date"
+            ],
+            [
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+                "End_Date"
+            ],
+            [
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+                "Claim_Header_ID"
+            ],
+            [
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+                "Claim_Status_Code"
+            ],
+            [
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+                "Claim_Type_Code"
+            ],
+            [
+                3,
+                "Policy_ID"
+            ],
+            [
+                3,
+                "Date_of_Claim"
+            ],
+            [
+                3,
+                "Date_of_Settlement"
+            ],
+            [
+                3,
+                "Amount_Claimed"
+            ],
+            [
+                3,
+                "Amount_Piad"
+            ],
+            [
+                4,
+                "Claim_ID"
+            ],
+            [
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+                "Document_Type_Code"
+            ],
+            [
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+                "Created_by_Staff_ID"
+            ],
+            [
+                4,
+                "Created_Date"
+            ],
+            [
+                5,
+                "Claim_Stage_ID"
+            ],
+            [
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+                "Next_Claim_Stage_ID"
+            ],
+            [
+                5,
+                "Claim_Status_Name"
+            ],
+            [
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+                "Claim_Status_Description"
+            ],
+            [
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+                "Claim_Processing_ID"
+            ],
+            [
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+                "Claim_ID"
+            ],
+            [
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+                "Claim_Outcome_Code"
+            ],
+            [
+                6,
+                "Claim_Stage_ID"
+            ],
+            [
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+                "Staff_ID"
+            ]
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+            "number",
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+            "text",
+            "number",
+            "number",
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+            "number",
+            "number"
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+            22,
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+            "staff",
+            "policies",
+            "claim headers",
+            "claims documents",
+            "claims processing stages",
+            "claims processing"
+        ],
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+            "Staff",
+            "Policies",
+            "Claim_Headers",
+            "Claims_Documents",
+            "Claims_Processing_Stages",
+            "Claims_Processing"
+        ]
+    },
+    {
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+                "*"
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+            [
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+            ],
+            [
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+                "class section"
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+            [
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ],
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+            ],
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+            [
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+            [
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+            [
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+                "department code"
+            ],
+            [
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+                "professor office"
+            ],
+            [
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+                "professor extension"
+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
+                6,
+                "student init"
+            ],
+            [
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+                "student date of birth"
+            ],
+            [
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+            ],
+            [
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+                "student gpa"
+            ],
+            [
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+                "student transfer"
+            ],
+            [
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+            ],
+            [
+                6,
+                "student phone"
+            ],
+            [
+                6,
+                "professor number"
+            ]
+        ],
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+                "*"
+            ],
+            [
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+                "CLASS_CODE"
+            ],
+            [
+                0,
+                "CRS_CODE"
+            ],
+            [
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+                "CLASS_SECTION"
+            ],
+            [
+                0,
+                "CLASS_TIME"
+            ],
+            [
+                0,
+                "CLASS_ROOM"
+            ],
+            [
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+                "CRS_CODE"
+            ],
+            [
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+                "DEPT_CODE"
+            ],
+            [
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+                "CRS_DESCRIPTION"
+            ],
+            [
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+            ],
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+            ],
+            [
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+            ],
+            [
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+                "EMP_NUM"
+            ],
+            [
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+            ],
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+            ],
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+            ],
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+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
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+            ],
+            [
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+            [
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+            "employee",
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+            "professor",
+            "student"
+        ],
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+            "CLASS",
+            "COURSE",
+            "DEPARTMENT",
+            "EMPLOYEE",
+            "ENROLL",
+            "PROFESSOR",
+            "STUDENT"
+        ]
+    },
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+            [
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+            ],
+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+                "*"
+            ],
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+                "master_customer_id"
+            ],
+            [
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+            [
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+            ],
+            [
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+            ],
+            [
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+                "electoral_register_id"
+            ],
+            [
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+            ]
+        ],
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+            "number",
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+            "number",
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+            "number",
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+            10,
+            12,
+            14,
+            16
+        ],
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+            "cmi cross references",
+            "council tax",
+            "business rates",
+            "benefits overpayments",
+            "parking fines",
+            "rent arrears",
+            "electoral register"
+        ],
+        "table_names_original": [
+            "Customer_Master_Index",
+            "CMI_Cross_References",
+            "Council_Tax",
+            "Business_Rates",
+            "Benefits_Overpayments",
+            "Parking_Fines",
+            "Rent_Arrears",
+            "Electoral_Register"
+        ]
+    },
+    {
+        "column_names": [
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+                "*"
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+                "publication id"
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+            [
+                0,
+                "book id"
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+            ],
+            [
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+            [
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+                "price"
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+            [
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+            [
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+            [
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+            "other property features"
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+            "Ref_Property_Types",
+            "Other_Available_Features",
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+            "Other_Property_Features"
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+            [
+                1,
+                "loser age"
+            ],
+            [
+                1,
+                "loser entry"
+            ],
+            [
+                1,
+                "loser hand"
+            ],
+            [
+                1,
+                "loser ht"
+            ],
+            [
+                1,
+                "loser id"
+            ],
+            [
+                1,
+                "loser ioc"
+            ],
+            [
+                1,
+                "loser name"
+            ],
+            [
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+                "loser rank"
+            ],
+            [
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+            ],
+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
+                2,
+                "ranking"
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+            [
+                2,
+                "player id"
+            ],
+            [
+                2,
+                "ranking points"
+            ],
+            [
+                2,
+                "tours"
+            ]
+        ],
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+                "*"
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+            [
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+                "player_id"
+            ],
+            [
+                0,
+                "first_name"
+            ],
+            [
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+                "last_name"
+            ],
+            [
+                0,
+                "hand"
+            ],
+            [
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+                "birth_date"
+            ],
+            [
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+                "country_code"
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+            [
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+            ],
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+            ],
+            [
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+            ],
+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ],
+            [
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+            [
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+            [
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+            [
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+            "rankings"
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+    },
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+            [
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+            [
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+            [
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+            "user",
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+    },
+    {
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+            [
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+            [
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+            [
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+                "class room"
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+            [
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+            [
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+            [
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+            "teachers"
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+    {
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            ],
+            [
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+            [
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+            ],
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+            [
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+            [
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+            "furniture manufacte"
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+            "furniture",
+            "furniture_manufacte"
+        ]
+    },
+    {
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+            "laptimes"
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+            "Video_Games",
+            "Plays_Games",
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+    },
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+            ],
+            [
+                2,
+                "start_station_name"
+            ],
+            [
+                2,
+                "start_station_id"
+            ],
+            [
+                2,
+                "end_date"
+            ],
+            [
+                2,
+                "end_station_name"
+            ],
+            [
+                2,
+                "end_station_id"
+            ],
+            [
+                2,
+                "bike_id"
+            ],
+            [
+                2,
+                "subscription_type"
+            ],
+            [
+                2,
+                "zip_code"
+            ],
+            [
+                3,
+                "date"
+            ],
+            [
+                3,
+                "max_temperature_f"
+            ],
+            [
+                3,
+                "mean_temperature_f"
+            ],
+            [
+                3,
+                "min_temperature_f"
+            ],
+            [
+                3,
+                "max_dew_point_f"
+            ],
+            [
+                3,
+                "mean_dew_point_f"
+            ],
+            [
+                3,
+                "min_dew_point_f"
+            ],
+            [
+                3,
+                "max_humidity"
+            ],
+            [
+                3,
+                "mean_humidity"
+            ],
+            [
+                3,
+                "min_humidity"
+            ],
+            [
+                3,
+                "max_sea_level_pressure_inches"
+            ],
+            [
+                3,
+                "mean_sea_level_pressure_inches"
+            ],
+            [
+                3,
+                "min_sea_level_pressure_inches"
+            ],
+            [
+                3,
+                "max_visibility_miles"
+            ],
+            [
+                3,
+                "mean_visibility_miles"
+            ],
+            [
+                3,
+                "min_visibility_miles"
+            ],
+            [
+                3,
+                "max_wind_Speed_mph"
+            ],
+            [
+                3,
+                "mean_wind_speed_mph"
+            ],
+            [
+                3,
+                "max_gust_speed_mph"
+            ],
+            [
+                3,
+                "precipitation_inches"
+            ],
+            [
+                3,
+                "cloud_cover"
+            ],
+            [
+                3,
+                "events"
+            ],
+            [
+                3,
+                "wind_dir_degrees"
+            ],
+            [
+                3,
+                "zip_code"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number"
+        ],
+        "db_id": "bike_1",
+        "foreign_keys": [
+            [
+                8,
+                1
+            ]
+        ],
+        "primary_keys": [
+            1,
+            12
+        ],
+        "table_names": [
+            "station",
+            "status",
+            "trip",
+            "weather"
+        ],
+        "table_names_original": [
+            "station",
+            "status",
+            "trip",
+            "weather"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "entrepreneur id"
+            ],
+            [
+                0,
+                "people id"
+            ],
+            [
+                0,
+                "company"
+            ],
+            [
+                0,
+                "money requested"
+            ],
+            [
+                0,
+                "investor"
+            ],
+            [
+                1,
+                "people id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "height"
+            ],
+            [
+                1,
+                "weight"
+            ],
+            [
+                1,
+                "date of birth"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Entrepreneur_ID"
+            ],
+            [
+                0,
+                "People_ID"
+            ],
+            [
+                0,
+                "Company"
+            ],
+            [
+                0,
+                "Money_Requested"
+            ],
+            [
+                0,
+                "Investor"
+            ],
+            [
+                1,
+                "People_ID"
+            ],
+            [
+                1,
+                "Name"
+            ],
+            [
+                1,
+                "Height"
+            ],
+            [
+                1,
+                "Weight"
+            ],
+            [
+                1,
+                "Date_of_Birth"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text"
+        ],
+        "db_id": "entrepreneur",
+        "foreign_keys": [
+            [
+                2,
+                6
+            ]
+        ],
+        "primary_keys": [
+            1,
+            6
+        ],
+        "table_names": [
+            "entrepreneur",
+            "people"
+        ],
+        "table_names_original": [
+            "entrepreneur",
+            "people"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "conductor id"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                0,
+                "age"
+            ],
+            [
+                0,
+                "nationality"
+            ],
+            [
+                0,
+                "year of work"
+            ],
+            [
+                1,
+                "orchestra id"
+            ],
+            [
+                1,
+                "orchestra"
+            ],
+            [
+                1,
+                "conductor id"
+            ],
+            [
+                1,
+                "record company"
+            ],
+            [
+                1,
+                "year of founded"
+            ],
+            [
+                1,
+                "major record format"
+            ],
+            [
+                2,
+                "performance id"
+            ],
+            [
+                2,
+                "orchestra id"
+            ],
+            [
+                2,
+                "type"
+            ],
+            [
+                2,
+                "date"
+            ],
+            [
+                2,
+                "official ratings (millions)"
+            ],
+            [
+                2,
+                "weekly rank"
+            ],
+            [
+                2,
+                "share"
+            ],
+            [
+                3,
+                "show id"
+            ],
+            [
+                3,
+                "performance id"
+            ],
+            [
+                3,
+                "if first show"
+            ],
+            [
+                3,
+                "result"
+            ],
+            [
+                3,
+                "attendance"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Conductor_ID"
+            ],
+            [
+                0,
+                "Name"
+            ],
+            [
+                0,
+                "Age"
+            ],
+            [
+                0,
+                "Nationality"
+            ],
+            [
+                0,
+                "Year_of_Work"
+            ],
+            [
+                1,
+                "Orchestra_ID"
+            ],
+            [
+                1,
+                "Orchestra"
+            ],
+            [
+                1,
+                "Conductor_ID"
+            ],
+            [
+                1,
+                "Record_Company"
+            ],
+            [
+                1,
+                "Year_of_Founded"
+            ],
+            [
+                1,
+                "Major_Record_Format"
+            ],
+            [
+                2,
+                "Performance_ID"
+            ],
+            [
+                2,
+                "Orchestra_ID"
+            ],
+            [
+                2,
+                "Type"
+            ],
+            [
+                2,
+                "Date"
+            ],
+            [
+                2,
+                "Official_ratings_(millions)"
+            ],
+            [
+                2,
+                "Weekly_rank"
+            ],
+            [
+                2,
+                "Share"
+            ],
+            [
+                3,
+                "Show_ID"
+            ],
+            [
+                3,
+                "Performance_ID"
+            ],
+            [
+                3,
+                "If_first_show"
+            ],
+            [
+                3,
+                "Result"
+            ],
+            [
+                3,
+                "Attendance"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "others",
+            "text",
+            "number"
+        ],
+        "db_id": "orchestra",
+        "foreign_keys": [
+            [
+                8,
+                1
+            ],
+            [
+                13,
+                6
+            ],
+            [
+                20,
+                12
+            ]
+        ],
+        "primary_keys": [
+            1,
+            6,
+            12
+        ],
+        "table_names": [
+            "conductor",
+            "orchestra",
+            "performance",
+            "show"
+        ],
+        "table_names_original": [
+            "conductor",
+            "orchestra",
+            "performance",
+            "show"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "payment method code"
+            ],
+            [
+                0,
+                "payment method description"
+            ],
+            [
+                1,
+                "service type code"
+            ],
+            [
+                1,
+                "parent service type code"
+            ],
+            [
+                1,
+                "service type description"
+            ],
+            [
+                2,
+                "address id"
+            ],
+            [
+                2,
+                "line 1"
+            ],
+            [
+                2,
+                "line 2"
+            ],
+            [
+                2,
+                "city town"
+            ],
+            [
+                2,
+                "state county"
+            ],
+            [
+                2,
+                "other details"
+            ],
+            [
+                3,
+                "product id"
+            ],
+            [
+                3,
+                "product name"
+            ],
+            [
+                3,
+                "product price"
+            ],
+            [
+                3,
+                "product description"
+            ],
+            [
+                3,
+                "other product service details"
+            ],
+            [
+                4,
+                "marketing region code"
+            ],
+            [
+                4,
+                "marketing region name"
+            ],
+            [
+                4,
+                "marketing region descriptrion"
+            ],
+            [
+                4,
+                "other details"
+            ],
+            [
+                5,
+                "client id"
+            ],
+            [
+                5,
+                "address id"
+            ],
+            [
+                5,
+                "customer email address"
+            ],
+            [
+                5,
+                "customer name"
+            ],
+            [
+                5,
+                "customer phone"
+            ],
+            [
+                5,
+                "other details"
+            ],
+            [
+                6,
+                "workshop group id"
+            ],
+            [
+                6,
+                "address id"
+            ],
+            [
+                6,
+                "currency code"
+            ],
+            [
+                6,
+                "marketing region code"
+            ],
+            [
+                6,
+                "store name"
+            ],
+            [
+                6,
+                "store phone"
+            ],
+            [
+                6,
+                "store email address"
+            ],
+            [
+                6,
+                "other details"
+            ],
+            [
+                7,
+                "performer id"
+            ],
+            [
+                7,
+                "address id"
+            ],
+            [
+                7,
+                "customer name"
+            ],
+            [
+                7,
+                "customer phone"
+            ],
+            [
+                7,
+                "customer email address"
+            ],
+            [
+                7,
+                "other details"
+            ],
+            [
+                8,
+                "customer id"
+            ],
+            [
+                8,
+                "address id"
+            ],
+            [
+                8,
+                "customer name"
+            ],
+            [
+                8,
+                "customer phone"
+            ],
+            [
+                8,
+                "customer email address"
+            ],
+            [
+                8,
+                "other details"
+            ],
+            [
+                9,
+                "store id"
+            ],
+            [
+                9,
+                "address id"
+            ],
+            [
+                9,
+                "marketing region code"
+            ],
+            [
+                9,
+                "store name"
+            ],
+            [
+                9,
+                "store phone"
+            ],
+            [
+                9,
+                "store email address"
+            ],
+            [
+                9,
+                "other details"
+            ],
+            [
+                10,
+                "booking id"
+            ],
+            [
+                10,
+                "customer id"
+            ],
+            [
+                10,
+                "workshop group id"
+            ],
+            [
+                10,
+                "status code"
+            ],
+            [
+                10,
+                "store id"
+            ],
+            [
+                10,
+                "order date"
+            ],
+            [
+                10,
+                "planned delivery date"
+            ],
+            [
+                10,
+                "actual delivery date"
+            ],
+            [
+                10,
+                "other order details"
+            ],
+            [
+                11,
+                "order id"
+            ],
+            [
+                11,
+                "performer id"
+            ],
+            [
+                12,
+                "order id"
+            ],
+            [
+                12,
+                "customer id"
+            ],
+            [
+                12,
+                "store id"
+            ],
+            [
+                12,
+                "order date"
+            ],
+            [
+                12,
+                "planned delivery date"
+            ],
+            [
+                12,
+                "actual delivery date"
+            ],
+            [
+                12,
+                "other order details"
+            ],
+            [
+                13,
+                "order item id"
+            ],
+            [
+                13,
+                "order id"
+            ],
+            [
+                13,
+                "product id"
+            ],
+            [
+                13,
+                "order quantity"
+            ],
+            [
+                13,
+                "other item details"
+            ],
+            [
+                14,
+                "invoice id"
+            ],
+            [
+                14,
+                "order id"
+            ],
+            [
+                14,
+                "payment method code"
+            ],
+            [
+                14,
+                "product id"
+            ],
+            [
+                14,
+                "order quantity"
+            ],
+            [
+                14,
+                "other item details"
+            ],
+            [
+                14,
+                "order item id"
+            ],
+            [
+                15,
+                "service id"
+            ],
+            [
+                15,
+                "service type code"
+            ],
+            [
+                15,
+                "workshop group id"
+            ],
+            [
+                15,
+                "product description"
+            ],
+            [
+                15,
+                "product name"
+            ],
+            [
+                15,
+                "product price"
+            ],
+            [
+                15,
+                "other product service details"
+            ],
+            [
+                16,
+                "order id"
+            ],
+            [
+                16,
+                "product id"
+            ],
+            [
+                17,
+                "invoice item id"
+            ],
+            [
+                17,
+                "invoice id"
+            ],
+            [
+                17,
+                "order id"
+            ],
+            [
+                17,
+                "order item id"
+            ],
+            [
+                17,
+                "product id"
+            ],
+            [
+                17,
+                "order quantity"
+            ],
+            [
+                17,
+                "other item details"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "payment_method_code"
+            ],
+            [
+                0,
+                "payment_method_description"
+            ],
+            [
+                1,
+                "Service_Type_Code"
+            ],
+            [
+                1,
+                "Parent_Service_Type_Code"
+            ],
+            [
+                1,
+                "Service_Type_Description"
+            ],
+            [
+                2,
+                "Address_ID"
+            ],
+            [
+                2,
+                "Line_1"
+            ],
+            [
+                2,
+                "Line_2"
+            ],
+            [
+                2,
+                "City_Town"
+            ],
+            [
+                2,
+                "State_County"
+            ],
+            [
+                2,
+                "Other_Details"
+            ],
+            [
+                3,
+                "Product_ID"
+            ],
+            [
+                3,
+                "Product_Name"
+            ],
+            [
+                3,
+                "Product_Price"
+            ],
+            [
+                3,
+                "Product_Description"
+            ],
+            [
+                3,
+                "Other_Product_Service_Details"
+            ],
+            [
+                4,
+                "Marketing_Region_Code"
+            ],
+            [
+                4,
+                "Marketing_Region_Name"
+            ],
+            [
+                4,
+                "Marketing_Region_Descriptrion"
+            ],
+            [
+                4,
+                "Other_Details"
+            ],
+            [
+                5,
+                "Client_ID"
+            ],
+            [
+                5,
+                "Address_ID"
+            ],
+            [
+                5,
+                "Customer_Email_Address"
+            ],
+            [
+                5,
+                "Customer_Name"
+            ],
+            [
+                5,
+                "Customer_Phone"
+            ],
+            [
+                5,
+                "Other_Details"
+            ],
+            [
+                6,
+                "Workshop_Group_ID"
+            ],
+            [
+                6,
+                "Address_ID"
+            ],
+            [
+                6,
+                "Currency_Code"
+            ],
+            [
+                6,
+                "Marketing_Region_Code"
+            ],
+            [
+                6,
+                "Store_Name"
+            ],
+            [
+                6,
+                "Store_Phone"
+            ],
+            [
+                6,
+                "Store_Email_Address"
+            ],
+            [
+                6,
+                "Other_Details"
+            ],
+            [
+                7,
+                "Performer_ID"
+            ],
+            [
+                7,
+                "Address_ID"
+            ],
+            [
+                7,
+                "Customer_Name"
+            ],
+            [
+                7,
+                "Customer_Phone"
+            ],
+            [
+                7,
+                "Customer_Email_Address"
+            ],
+            [
+                7,
+                "Other_Details"
+            ],
+            [
+                8,
+                "Customer_ID"
+            ],
+            [
+                8,
+                "Address_ID"
+            ],
+            [
+                8,
+                "Customer_Name"
+            ],
+            [
+                8,
+                "Customer_Phone"
+            ],
+            [
+                8,
+                "Customer_Email_Address"
+            ],
+            [
+                8,
+                "Other_Details"
+            ],
+            [
+                9,
+                "Store_ID"
+            ],
+            [
+                9,
+                "Address_ID"
+            ],
+            [
+                9,
+                "Marketing_Region_Code"
+            ],
+            [
+                9,
+                "Store_Name"
+            ],
+            [
+                9,
+                "Store_Phone"
+            ],
+            [
+                9,
+                "Store_Email_Address"
+            ],
+            [
+                9,
+                "Other_Details"
+            ],
+            [
+                10,
+                "Booking_ID"
+            ],
+            [
+                10,
+                "Customer_ID"
+            ],
+            [
+                10,
+                "Workshop_Group_ID"
+            ],
+            [
+                10,
+                "Status_Code"
+            ],
+            [
+                10,
+                "Store_ID"
+            ],
+            [
+                10,
+                "Order_Date"
+            ],
+            [
+                10,
+                "Planned_Delivery_Date"
+            ],
+            [
+                10,
+                "Actual_Delivery_Date"
+            ],
+            [
+                10,
+                "Other_Order_Details"
+            ],
+            [
+                11,
+                "Order_ID"
+            ],
+            [
+                11,
+                "Performer_ID"
+            ],
+            [
+                12,
+                "Order_ID"
+            ],
+            [
+                12,
+                "Customer_ID"
+            ],
+            [
+                12,
+                "Store_ID"
+            ],
+            [
+                12,
+                "Order_Date"
+            ],
+            [
+                12,
+                "Planned_Delivery_Date"
+            ],
+            [
+                12,
+                "Actual_Delivery_Date"
+            ],
+            [
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+                "Advisor"
+            ],
+            [
+                3,
+                "city_code"
+            ],
+            [
+                4,
+                "FacID"
+            ],
+            [
+                4,
+                "Lname"
+            ],
+            [
+                4,
+                "Fname"
+            ],
+            [
+                4,
+                "Rank"
+            ],
+            [
+                4,
+                "Sex"
+            ],
+            [
+                4,
+                "Phone"
+            ],
+            [
+                4,
+                "Room"
+            ],
+            [
+                4,
+                "Building"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text"
+        ],
+        "db_id": "activity_1",
+        "foreign_keys": [
+            [
+                4,
+                1
+            ],
+            [
+                3,
+                7
+            ],
+            [
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+                1
+            ],
+            [
+                5,
+                15
+            ]
+        ],
+        "primary_keys": [
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+            7,
+            15
+        ],
+        "table_names": [
+            "activity",
+            "participates in",
+            "faculty participates in",
+            "student",
+            "faculty"
+        ],
+        "table_names_original": [
+            "Activity",
+            "Participates_in",
+            "Faculty_Participates_in",
+            "Student",
+            "Faculty"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "star rating code"
+            ],
+            [
+                0,
+                "star rating description"
+            ],
+            [
+                1,
+                "location id"
+            ],
+            [
+                1,
+                "location name"
+            ],
+            [
+                1,
+                "address"
+            ],
+            [
+                1,
+                "other details"
+            ],
+            [
+                2,
+                "attraction type code"
+            ],
+            [
+                2,
+                "attraction type description"
+            ],
+            [
+                3,
+                "tourist id"
+            ],
+            [
+                3,
+                "tourist details"
+            ],
+            [
+                4,
+                "feature id"
+            ],
+            [
+                4,
+                "feature details"
+            ],
+            [
+                5,
+                "hotel id"
+            ],
+            [
+                5,
+                "star rating code"
+            ],
+            [
+                5,
+                "pets allowed yn"
+            ],
+            [
+                5,
+                "price range"
+            ],
+            [
+                5,
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+            ],
+            [
+                6,
+                "tourist attraction id"
+            ],
+            [
+                6,
+                "attraction type code"
+            ],
+            [
+                6,
+                "location id"
+            ],
+            [
+                6,
+                "how to get there"
+            ],
+            [
+                6,
+                "name"
+            ],
+            [
+                6,
+                "description"
+            ],
+            [
+                6,
+                "opening hours"
+            ],
+            [
+                6,
+                "other details"
+            ],
+            [
+                7,
+                "market id"
+            ],
+            [
+                7,
+                "market details"
+            ],
+            [
+                8,
+                "shop id"
+            ],
+            [
+                8,
+                "shop details"
+            ],
+            [
+                9,
+                "museum id"
+            ],
+            [
+                9,
+                "museum details"
+            ],
+            [
+                10,
+                "royal family id"
+            ],
+            [
+                10,
+                "royal family details"
+            ],
+            [
+                11,
+                "theme park id"
+            ],
+            [
+                11,
+                "theme park details"
+            ],
+            [
+                12,
+                "visit id"
+            ],
+            [
+                12,
+                "tourist attraction id"
+            ],
+            [
+                12,
+                "tourist id"
+            ],
+            [
+                12,
+                "visit date"
+            ],
+            [
+                12,
+                "visit details"
+            ],
+            [
+                13,
+                "photo id"
+            ],
+            [
+                13,
+                "tourist attraction id"
+            ],
+            [
+                13,
+                "name"
+            ],
+            [
+                13,
+                "description"
+            ],
+            [
+                13,
+                "filename"
+            ],
+            [
+                13,
+                "other details"
+            ],
+            [
+                14,
+                "staff id"
+            ],
+            [
+                14,
+                "tourist attraction id"
+            ],
+            [
+                14,
+                "name"
+            ],
+            [
+                14,
+                "other details"
+            ],
+            [
+                15,
+                "tourist attraction id"
+            ],
+            [
+                15,
+                "feature id"
+            ]
+        ],
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+                "*"
+            ],
+            [
+                0,
+                "star_rating_code"
+            ],
+            [
+                0,
+                "star_rating_description"
+            ],
+            [
+                1,
+                "Location_ID"
+            ],
+            [
+                1,
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+            ],
+            [
+                1,
+                "Address"
+            ],
+            [
+                1,
+                "Other_Details"
+            ],
+            [
+                2,
+                "Attraction_Type_Code"
+            ],
+            [
+                2,
+                "Attraction_Type_Description"
+            ],
+            [
+                3,
+                "Tourist_ID"
+            ],
+            [
+                3,
+                "Tourist_Details"
+            ],
+            [
+                4,
+                "Feature_ID"
+            ],
+            [
+                4,
+                "Feature_Details"
+            ],
+            [
+                5,
+                "hotel_id"
+            ],
+            [
+                5,
+                "star_rating_code"
+            ],
+            [
+                5,
+                "pets_allowed_yn"
+            ],
+            [
+                5,
+                "price_range"
+            ],
+            [
+                5,
+                "other_hotel_details"
+            ],
+            [
+                6,
+                "Tourist_Attraction_ID"
+            ],
+            [
+                6,
+                "Attraction_Type_Code"
+            ],
+            [
+                6,
+                "Location_ID"
+            ],
+            [
+                6,
+                "How_to_Get_There"
+            ],
+            [
+                6,
+                "Name"
+            ],
+            [
+                6,
+                "Description"
+            ],
+            [
+                6,
+                "Opening_Hours"
+            ],
+            [
+                6,
+                "Other_Details"
+            ],
+            [
+                7,
+                "Market_ID"
+            ],
+            [
+                7,
+                "Market_Details"
+            ],
+            [
+                8,
+                "Shop_ID"
+            ],
+            [
+                8,
+                "Shop_Details"
+            ],
+            [
+                9,
+                "Museum_ID"
+            ],
+            [
+                9,
+                "Museum_Details"
+            ],
+            [
+                10,
+                "Royal_Family_ID"
+            ],
+            [
+                10,
+                "Royal_Family_Details"
+            ],
+            [
+                11,
+                "Theme_Park_ID"
+            ],
+            [
+                11,
+                "Theme_Park_Details"
+            ],
+            [
+                12,
+                "Visit_ID"
+            ],
+            [
+                12,
+                "Tourist_Attraction_ID"
+            ],
+            [
+                12,
+                "Tourist_ID"
+            ],
+            [
+                12,
+                "Visit_Date"
+            ],
+            [
+                12,
+                "Visit_Details"
+            ],
+            [
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+                "Photo_ID"
+            ],
+            [
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+            ],
+            [
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+                "Name"
+            ],
+            [
+                13,
+                "Description"
+            ],
+            [
+                13,
+                "Filename"
+            ],
+            [
+                13,
+                "Other_Details"
+            ],
+            [
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+                "Staff_ID"
+            ],
+            [
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+                "Tourist_Attraction_ID"
+            ],
+            [
+                14,
+                "Name"
+            ],
+            [
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+                "Other_Details"
+            ],
+            [
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+                "Tourist_Attraction_ID"
+            ],
+            [
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+                "Feature_ID"
+            ]
+        ],
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+            "text",
+            "number",
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+            34,
+            36,
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+            47,
+            51
+        ],
+        "table_names": [
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+            "locations",
+            "ref attraction types",
+            "visitors",
+            "features",
+            "hotels",
+            "tourist attractions",
+            "street markets",
+            "shops",
+            "museums",
+            "royal family",
+            "theme parks",
+            "visits",
+            "photos",
+            "staff",
+            "tourist attraction features"
+        ],
+        "table_names_original": [
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+            "Locations",
+            "Ref_Attraction_Types",
+            "Visitors",
+            "Features",
+            "Hotels",
+            "Tourist_Attractions",
+            "Street_Markets",
+            "Shops",
+            "Museums",
+            "Royal_Family",
+            "Theme_Parks",
+            "Visits",
+            "Photos",
+            "Staff",
+            "Tourist_Attraction_Features"
+        ]
+    },
+    {
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+                "*"
+            ],
+            [
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+                "user id"
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+            [
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+                "follower id"
+            ],
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+                "id"
+            ],
+            [
+                1,
+                "user id"
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+            ],
+            [
+                1,
+                "create date"
+            ],
+            [
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+                "uid"
+            ],
+            [
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+                "name"
+            ],
+            [
+                2,
+                "email"
+            ],
+            [
+                2,
+                "partition id"
+            ],
+            [
+                2,
+                "followers"
+            ]
+        ],
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+                "*"
+            ],
+            [
+                0,
+                "f1"
+            ],
+            [
+                0,
+                "f2"
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+            ],
+            [
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+                "email"
+            ],
+            [
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+                "partitionid"
+            ],
+            [
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+                "followers"
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+        ],
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+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "time",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number"
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+        "foreign_keys": [
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+            3,
+            7
+        ],
+        "table_names": [
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+            "user profiles"
+        ],
+        "table_names_original": [
+            "follows",
+            "tweets",
+            "user_profiles"
+        ]
+    },
+    {
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+                "*"
+            ],
+            [
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+                "election id"
+            ],
+            [
+                0,
+                "representative id"
+            ],
+            [
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+                "date"
+            ],
+            [
+                0,
+                "votes"
+            ],
+            [
+                0,
+                "vote percent"
+            ],
+            [
+                0,
+                "seats"
+            ],
+            [
+                0,
+                "place"
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+            [
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+                "representative id"
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+                "name"
+            ],
+            [
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+                "state"
+            ],
+            [
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+                "party"
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+            [
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+                "lifespan"
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+        "column_names_original": [
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+                "*"
+            ],
+            [
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+                "Election_ID"
+            ],
+            [
+                0,
+                "Representative_ID"
+            ],
+            [
+                0,
+                "Date"
+            ],
+            [
+                0,
+                "Votes"
+            ],
+            [
+                0,
+                "Vote_Percent"
+            ],
+            [
+                0,
+                "Seats"
+            ],
+            [
+                0,
+                "Place"
+            ],
+            [
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+                "Representative_ID"
+            ],
+            [
+                1,
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+            ],
+            [
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+                "State"
+            ],
+            [
+                1,
+                "Party"
+            ],
+            [
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+                "Lifespan"
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+            "number",
+            "number",
+            "number",
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+            "text"
+        ],
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+        "foreign_keys": [
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+                2,
+                8
+            ]
+        ],
+        "primary_keys": [
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+            8
+        ],
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+            "election",
+            "representative"
+        ],
+        "table_names_original": [
+            "election",
+            "representative"
+        ]
+    },
+    {
+        "column_names": [
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "student id"
+            ],
+            [
+                0,
+                "last name"
+            ],
+            [
+                0,
+                "first name"
+            ],
+            [
+                0,
+                "age"
+            ],
+            [
+                0,
+                "sex"
+            ],
+            [
+                0,
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+            ],
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+            ],
+            [
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+            [
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+            ],
+            [
+                1,
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+            ],
+            [
+                1,
+                "vice president vote"
+            ],
+            [
+                1,
+                "secretary vote"
+            ],
+            [
+                1,
+                "treasurer vote"
+            ],
+            [
+                1,
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+            ],
+            [
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+            ]
+        ],
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+                "*"
+            ],
+            [
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+                "StuID"
+            ],
+            [
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+            [
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+                "Fname"
+            ],
+            [
+                0,
+                "Age"
+            ],
+            [
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+            ],
+            [
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+                "Major"
+            ],
+            [
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+            ],
+            [
+                0,
+                "city_code"
+            ],
+            [
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+            ],
+            [
+                1,
+                "Registration_Date"
+            ],
+            [
+                1,
+                "Election_Cycle"
+            ],
+            [
+                1,
+                "President_Vote"
+            ],
+            [
+                1,
+                "Vice_President_Vote"
+            ],
+            [
+                1,
+                "Secretary_Vote"
+            ],
+            [
+                1,
+                "Treasurer_Vote"
+            ],
+            [
+                1,
+                "Class_President_Vote"
+            ],
+            [
+                1,
+                "Class_Senator_Vote"
+            ]
+        ],
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+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "number",
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+            "text",
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+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "voter_2",
+        "foreign_keys": [
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+                1
+            ],
+            [
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+                1
+            ],
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+            ],
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+                1
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+        ],
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+        ],
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+            "voting record"
+        ],
+        "table_names_original": [
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+            "Voting_record"
+        ]
+    },
+    {
+        "column_names": [
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+            ],
+            [
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+            ],
+            [
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+            [
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+            [
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+                "is male"
+            ],
+            [
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+                "church id"
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+            [
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+                "name"
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+            [
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+            [
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+                "continuation of"
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+            [
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+            [
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+            [
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+                "female id"
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+            [
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+            ]
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+            [
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+            ],
+            [
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+                "Country"
+            ],
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+        ],
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+            "school performance",
+            "player"
+        ],
+        "table_names_original": [
+            "school",
+            "school_details",
+            "school_performance",
+            "player"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
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+                "model name"
+            ],
+            [
+                0,
+                "launch year"
+            ],
+            [
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+            [
+                0,
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+            [
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+            [
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+            ],
+            [
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+            ],
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+            [
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+            [
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+            [
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+            [
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+            [
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+            ],
+            [
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+            "phone"
+        ],
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+            "phone"
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+    },
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+            [
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+            [
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+            ],
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+            ],
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+        ],
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+            "tv series",
+            "cartoon"
+        ],
+        "table_names_original": [
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+            "TV_series",
+            "Cartoon"
+        ]
+    },
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+            ],
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+            "Elimination"
+        ]
+    },
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+            [
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+            [
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+            [
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+            [
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+            [
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+            [
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+        ]
+    },
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+            [
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+            [
+                3,
+                "contact phone"
+            ],
+            [
+                4,
+                "customer id"
+            ],
+            [
+                4,
+                "address id"
+            ],
+            [
+                4,
+                "date from"
+            ],
+            [
+                4,
+                "date to"
+            ],
+            [
+                5,
+                "order id"
+            ],
+            [
+                5,
+                "customer id"
+            ],
+            [
+                5,
+                "order date"
+            ],
+            [
+                5,
+                "order status code"
+            ],
+            [
+                6,
+                "order item id"
+            ],
+            [
+                6,
+                "order id"
+            ],
+            [
+                6,
+                "product id"
+            ],
+            [
+                6,
+                "order quantity"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "address_id"
+            ],
+            [
+                0,
+                "line_1_number_building"
+            ],
+            [
+                0,
+                "city"
+            ],
+            [
+                0,
+                "zip_postcode"
+            ],
+            [
+                0,
+                "state_province_county"
+            ],
+            [
+                0,
+                "country"
+            ],
+            [
+                1,
+                "product_id"
+            ],
+            [
+                1,
+                "product_type_code"
+            ],
+            [
+                1,
+                "product_name"
+            ],
+            [
+                1,
+                "product_price"
+            ],
+            [
+                2,
+                "customer_id"
+            ],
+            [
+                2,
+                "payment_method_code"
+            ],
+            [
+                2,
+                "customer_number"
+            ],
+            [
+                2,
+                "customer_name"
+            ],
+            [
+                2,
+                "customer_address"
+            ],
+            [
+                2,
+                "customer_phone"
+            ],
+            [
+                2,
+                "customer_email"
+            ],
+            [
+                3,
+                "contact_id"
+            ],
+            [
+                3,
+                "customer_id"
+            ],
+            [
+                3,
+                "gender"
+            ],
+            [
+                3,
+                "first_name"
+            ],
+            [
+                3,
+                "last_name"
+            ],
+            [
+                3,
+                "contact_phone"
+            ],
+            [
+                4,
+                "customer_id"
+            ],
+            [
+                4,
+                "address_id"
+            ],
+            [
+                4,
+                "date_from"
+            ],
+            [
+                4,
+                "date_to"
+            ],
+            [
+                5,
+                "order_id"
+            ],
+            [
+                5,
+                "customer_id"
+            ],
+            [
+                5,
+                "order_date"
+            ],
+            [
+                5,
+                "order_status_code"
+            ],
+            [
+                6,
+                "order_item_id"
+            ],
+            [
+                6,
+                "order_id"
+            ],
+            [
+                6,
+                "product_id"
+            ],
+            [
+                6,
+                "order_quantity"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "time",
+            "time",
+            "number",
+            "number",
+            "time",
+            "text",
+            "number",
+            "number",
+            "number",
+            "text"
+        ],
+        "db_id": "customers_and_products_contacts",
+        "foreign_keys": [
+            [
+                25,
+                1
+            ],
+            [
+                24,
+                11
+            ],
+            [
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+                11
+            ],
+            [
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+                28
+            ],
+            [
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+                7
+            ]
+        ],
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+            7,
+            11,
+            18,
+            28
+        ],
+        "table_names": [
+            "addresses",
+            "products",
+            "customers",
+            "contacts",
+            "customer address history",
+            "customer orders",
+            "order items"
+        ],
+        "table_names_original": [
+            "Addresses",
+            "Products",
+            "Customers",
+            "Contacts",
+            "Customer_Address_History",
+            "Customer_Orders",
+            "Order_Items"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "employee ssn"
+            ],
+            [
+                0,
+                "project number"
+            ],
+            [
+                0,
+                "hours"
+            ],
+            [
+                1,
+                "first name"
+            ],
+            [
+                1,
+                "minit"
+            ],
+            [
+                1,
+                "last name"
+            ],
+            [
+                1,
+                "ssn"
+            ],
+            [
+                1,
+                "birth date"
+            ],
+            [
+                1,
+                "address"
+            ],
+            [
+                1,
+                "sex"
+            ],
+            [
+                1,
+                "salary"
+            ],
+            [
+                1,
+                "super ssn"
+            ],
+            [
+                1,
+                "department no"
+            ],
+            [
+                2,
+                "department name"
+            ],
+            [
+                2,
+                "department number"
+            ],
+            [
+                2,
+                "manager ssn"
+            ],
+            [
+                2,
+                "manager start date"
+            ],
+            [
+                3,
+                "dependent name"
+            ],
+            [
+                3,
+                "dependent number"
+            ],
+            [
+                3,
+                "dependent location"
+            ],
+            [
+                3,
+                "department number"
+            ],
+            [
+                4,
+                "employee ssn"
+            ],
+            [
+                4,
+                "dependent name"
+            ],
+            [
+                4,
+                "sex"
+            ],
+            [
+                4,
+                "birth date"
+            ],
+            [
+                4,
+                "relationship"
+            ],
+            [
+                5,
+                "department number"
+            ],
+            [
+                5,
+                "department location"
+            ]
+        ],
+        "column_names_original": [
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Essn"
+            ],
+            [
+                0,
+                "Pno"
+            ],
+            [
+                0,
+                "Hours"
+            ],
+            [
+                1,
+                "Fname"
+            ],
+            [
+                1,
+                "Minit"
+            ],
+            [
+                1,
+                "Lname"
+            ],
+            [
+                1,
+                "Ssn"
+            ],
+            [
+                1,
+                "Bdate"
+            ],
+            [
+                1,
+                "Address"
+            ],
+            [
+                1,
+                "Sex"
+            ],
+            [
+                1,
+                "Salary"
+            ],
+            [
+                1,
+                "Super_ssn"
+            ],
+            [
+                1,
+                "Dno"
+            ],
+            [
+                2,
+                "Dname"
+            ],
+            [
+                2,
+                "Dnumber"
+            ],
+            [
+                2,
+                "Mgr_ssn"
+            ],
+            [
+                2,
+                "Mgr_start_date"
+            ],
+            [
+                3,
+                "Pname"
+            ],
+            [
+                3,
+                "Pnumber"
+            ],
+            [
+                3,
+                "Plocation"
+            ],
+            [
+                3,
+                "Dnum"
+            ],
+            [
+                4,
+                "Essn"
+            ],
+            [
+                4,
+                "Dependent_name"
+            ],
+            [
+                4,
+                "Sex"
+            ],
+            [
+                4,
+                "Bdate"
+            ],
+            [
+                4,
+                "Relationship"
+            ],
+            [
+                5,
+                "Dnumber"
+            ],
+            [
+                5,
+                "Dlocation"
+            ]
+        ],
+        "column_types": [
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+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
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+            "number",
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+            "number",
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+            "text",
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+            "number",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "text"
+        ],
+        "db_id": "company_1",
+        "foreign_keys": [],
+        "primary_keys": [
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+            7,
+            15,
+            19,
+            22,
+            27
+        ],
+        "table_names": [
+            "works on",
+            "employee",
+            "department",
+            "project",
+            "dependent",
+            "department locations"
+        ],
+        "table_names_original": [
+            "works_on",
+            "employee",
+            "department",
+            "project",
+            "dependent",
+            "dept_locations"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "workshop id"
+            ],
+            [
+                0,
+                "date"
+            ],
+            [
+                0,
+                "venue"
+            ],
+            [
+                0,
+                "name"
+            ],
+            [
+                1,
+                "submission id"
+            ],
+            [
+                1,
+                "scores"
+            ],
+            [
+                1,
+                "author"
+            ],
+            [
+                1,
+                "college"
+            ],
+            [
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+                "submission id"
+            ],
+            [
+                2,
+                "workshop id"
+            ],
+            [
+                2,
+                "result"
+            ]
+        ],
+        "column_names_original": [
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Workshop_ID"
+            ],
+            [
+                0,
+                "Date"
+            ],
+            [
+                0,
+                "Venue"
+            ],
+            [
+                0,
+                "Name"
+            ],
+            [
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+                "Submission_ID"
+            ],
+            [
+                1,
+                "Scores"
+            ],
+            [
+                1,
+                "Author"
+            ],
+            [
+                1,
+                "College"
+            ],
+            [
+                2,
+                "Submission_ID"
+            ],
+            [
+                2,
+                "Workshop_ID"
+            ],
+            [
+                2,
+                "Result"
+            ]
+        ],
+        "column_types": [
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+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text"
+        ],
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+                1
+            ],
+            [
+                9,
+                5
+            ]
+        ],
+        "primary_keys": [
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+            5,
+            9
+        ],
+        "table_names": [
+            "workshop",
+            "submission",
+            "acceptance"
+        ],
+        "table_names_original": [
+            "workshop",
+            "submission",
+            "Acceptance"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "item id"
+            ],
+            [
+                0,
+                "title"
+            ],
+            [
+                1,
+                "a id"
+            ],
+            [
+                1,
+                "user id"
+            ],
+            [
+                1,
+                "item id"
+            ],
+            [
+                1,
+                "rating"
+            ],
+            [
+                1,
+                "rank"
+            ],
+            [
+                2,
+                "user id"
+            ],
+            [
+                2,
+                "name"
+            ],
+            [
+                3,
+                "source user id"
+            ],
+            [
+                3,
+                "target user id"
+            ],
+            [
+                3,
+                "trust"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "i_id"
+            ],
+            [
+                0,
+                "title"
+            ],
+            [
+                1,
+                "a_id"
+            ],
+            [
+                1,
+                "u_id"
+            ],
+            [
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+                "i_id"
+            ],
+            [
+                1,
+                "rating"
+            ],
+            [
+                1,
+                "rank"
+            ],
+            [
+                2,
+                "u_id"
+            ],
+            [
+                2,
+                "name"
+            ],
+            [
+                3,
+                "source_u_id"
+            ],
+            [
+                3,
+                "target_u_id"
+            ],
+            [
+                3,
+                "trust"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number"
+        ],
+        "db_id": "epinions_1",
+        "foreign_keys": [
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+                5,
+                1
+            ],
+            [
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+                8
+            ],
+            [
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+                8
+            ],
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+                8
+            ]
+        ],
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+            3,
+            8
+        ],
+        "table_names": [
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+            "useracct",
+            "trust"
+        ],
+        "table_names_original": [
+            "item",
+            "review",
+            "useracct",
+            "trust"
+        ]
+    },
+    {
+        "column_names": [
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "party id"
+            ],
+            [
+                0,
+                "party theme"
+            ],
+            [
+                0,
+                "location"
+            ],
+            [
+                0,
+                "first year"
+            ],
+            [
+                0,
+                "last year"
+            ],
+            [
+                0,
+                "number of hosts"
+            ],
+            [
+                1,
+                "host id"
+            ],
+            [
+                1,
+                "name"
+            ],
+            [
+                1,
+                "nationality"
+            ],
+            [
+                1,
+                "age"
+            ],
+            [
+                2,
+                "party id"
+            ],
+            [
+                2,
+                "host id"
+            ],
+            [
+                2,
+                "is main in charge"
+            ]
+        ],
+        "column_names_original": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "Party_ID"
+            ],
+            [
+                0,
+                "Party_Theme"
+            ],
+            [
+                0,
+                "Location"
+            ],
+            [
+                0,
+                "First_year"
+            ],
+            [
+                0,
+                "Last_year"
+            ],
+            [
+                0,
+                "Number_of_hosts"
+            ],
+            [
+                1,
+                "Host_ID"
+            ],
+            [
+                1,
+                "Name"
+            ],
+            [
+                1,
+                "Nationality"
+            ],
+            [
+                1,
+                "Age"
+            ],
+            [
+                2,
+                "Party_ID"
+            ],
+            [
+                2,
+                "Host_ID"
+            ],
+            [
+                2,
+                "Is_Main_in_Charge"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "others"
+        ],
+        "db_id": "party_host",
+        "foreign_keys": [
+            [
+                11,
+                1
+            ],
+            [
+                12,
+                7
+            ]
+        ],
+        "primary_keys": [
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+            7,
+            11
+        ],
+        "table_names": [
+            "party",
+            "host",
+            "party host"
+        ],
+        "table_names_original": [
+            "party",
+            "host",
+            "party_host"
+        ]
+    },
+    {
+        "column_names": [
+            [
+                -1,
+                "*"
+            ],
+            [
+                0,
+                "attribute id"
+            ],
+            [
+                0,
+                "attribute name"
+            ],
+            [
+                0,
+                "attribute data type"
+            ],
+            [
+                1,
+                "catalog id"
+            ],
+            [
+                1,
+                "catalog name"
+            ],
+            [
+                1,
+                "catalog publisher"
+            ],
+            [
+                1,
+                "date of publication"
+            ],
+            [
+                1,
+                "date of latest revision"
+            ],
+            [
+                2,
+                "catalog level number"
+            ],
+            [
+                2,
+                "catalog id"
+            ],
+            [
+                2,
+                "catalog level name"
+            ],
+            [
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+                "catalog entry id"
+            ],
+            [
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+                "catalog level number"
+            ],
+            [
+                3,
+                "parent entry id"
+            ],
+            [
+                3,
+                "previous entry id"
+            ],
+            [
+                3,
+                "next entry id"
+            ],
+            [
+                3,
+                "catalog entry name"
+            ],
+            [
+                3,
+                "product stock number"
+            ],
+            [
+                3,
+                "price in dollars"
+            ],
+            [
+                3,
+                "price in euros"
+            ],
+            [
+                3,
+                "price in pounds"
+            ],
+            [
+                3,
+                "capacity"
+            ],
+            [
+                3,
+                "length"
+            ],
+            [
+                3,
+                "height"
+            ],
+            [
+                3,
+                "width"
+            ],
+            [
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+                "catalog entry id"
+            ],
+            [
+                4,
+                "catalog level number"
+            ],
+            [
+                4,
+                "attribute id"
+            ],
+            [
+                4,
+                "attribute value"
+            ]
+        ],
+        "column_names_original": [
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+                -1,
+                "*"
+            ],
+            [
+                0,
+                "attribute_id"
+            ],
+            [
+                0,
+                "attribute_name"
+            ],
+            [
+                0,
+                "attribute_data_type"
+            ],
+            [
+                1,
+                "catalog_id"
+            ],
+            [
+                1,
+                "catalog_name"
+            ],
+            [
+                1,
+                "catalog_publisher"
+            ],
+            [
+                1,
+                "date_of_publication"
+            ],
+            [
+                1,
+                "date_of_latest_revision"
+            ],
+            [
+                2,
+                "catalog_level_number"
+            ],
+            [
+                2,
+                "catalog_id"
+            ],
+            [
+                2,
+                "catalog_level_name"
+            ],
+            [
+                3,
+                "catalog_entry_id"
+            ],
+            [
+                3,
+                "catalog_level_number"
+            ],
+            [
+                3,
+                "parent_entry_id"
+            ],
+            [
+                3,
+                "previous_entry_id"
+            ],
+            [
+                3,
+                "next_entry_id"
+            ],
+            [
+                3,
+                "catalog_entry_name"
+            ],
+            [
+                3,
+                "product_stock_number"
+            ],
+            [
+                3,
+                "price_in_dollars"
+            ],
+            [
+                3,
+                "price_in_euros"
+            ],
+            [
+                3,
+                "price_in_pounds"
+            ],
+            [
+                3,
+                "capacity"
+            ],
+            [
+                3,
+                "length"
+            ],
+            [
+                3,
+                "height"
+            ],
+            [
+                3,
+                "width"
+            ],
+            [
+                4,
+                "catalog_entry_id"
+            ],
+            [
+                4,
+                "catalog_level_number"
+            ],
+            [
+                4,
+                "attribute_id"
+            ],
+            [
+                4,
+                "attribute_value"
+            ]
+        ],
+        "column_types": [
+            "text",
+            "number",
+            "text",
+            "text",
+            "number",
+            "text",
+            "text",
+            "time",
+            "time",
+            "number",
+            "number",
+            "text",
+            "number",
+            "number",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "text",
+            "text",
+            "text",
+            "text",
+            "number",
+            "number",
+            "number",
+            "text"
+        ],
+        "db_id": "product_catalog",
+        "foreign_keys": [
+            [
+                10,
+                4
+            ],
+            [
+                13,
+                9
+            ],
+            [
+                27,
+                9
+            ],
+            [
+                26,
+                12
+            ]
+        ],
+        "primary_keys": [
+            1,
+            4,
+            9,
+            12
+        ],
+        "table_names": [
+            "attribute definitions",
+            "catalogs",
+            "catalog structure",
+            "catalog contents",
+            "catalog contents additional attributes"
+        ],
+        "table_names_original": [
+            "Attribute_Definitions",
+            "Catalogs",
+            "Catalog_Structure",
+            "Catalog_Contents",
+            "Catalog_Contents_Additional_Attributes"
+        ]
+    }
+]
\ No newline at end of file