What is the working area of the agent named 'Alex' in the AGENTS table?
{
    "explanation": "I finalized the SQL query by joining the AGENTS and CUSTOMER tables on the AGENT_CODE field, then joining the resulting table with the ORDERS table on the CUST_CODE and AGENT_CODE fields. I filtered the results to only include rows where the AGENT_NAME is 'Alex' and the WORKING_AREA is in the AGENTS table.",
    "query" : "SELECT c.CUST_NAME, c.WORKING_AREA, c.CUST_COUNTRY, o.ORD_NUM, o.ORD_AMOUNT, o.ADVANCE_AMOUNT, o.ORD_DATE, c.AGENT_CODE FROM CUSTOMER c JOIN ORDERS o ON c.CUST_CODE = o.CUST_CODE JOIN AGENTS a ON c.AGENT_CODE = a.AGENT_CODE WHERE LOWER(c.AGENT_NAME) = 'alex' AND c.WORKING_AREA IN (SELECT WORKING_AREA FROM AGENTS)",
    "operation_kind" : "list",
    "schema": "AGENTS, CUSTOMER, ORDERS",
    "confidence" : "100",
    "general_message": "Here is the list of agents named 'Alex' and their working areas",
    "main_entity" : "agent"
}