Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_10 (area_km_2 INTEGER, official_name VARCHAR, population VARCHAR)
### Question:
What is the Area of the Allardville Parish with a Population smaller than 2,151?
### Answer:
SELECT SUM(area_km_2) FROM table_name_10 WHERE official_name = "allardville" AND population < 2 OFFSET 151