CREATE TABLE table_name_10 (area_km_2 NUMBER, official_name VARCHAR2, population VARCHAR2)

What is the Area of the Allardville Parish with a Population smaller than 2,151?
SELECT SUM(area_km_2) FROM table_name_10 WHERE official_name = "allardville" AND population < 2 OFFSET 151
SELECT SUM("area_km_2") FROM "table_name_10" WHERE "allardville" = "official_name" AND "population" < 2 OFFSET 151 ROWS