What is the Area of the Allardville Parish with a Population smaller than 2,151?
CREATE TABLE table_77208 (
    "Official Name" text,
    "Status" text,
    "Area km 2" real,
    "Population" real,
    "Census Ranking" text
)
SELECT SUM("Area km 2") FROM table_77208 WHERE "Official Name" = 'allardville' AND "Population" < '2,151'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the Area of the Allardville Parish with a Population smaller than 2,151? ### Input: CREATE TABLE table_77208 (
    "Official Name" text,
    "Status" text,
    "Area km 2" real,
    "Population" real,
    "Census Ranking" text
) ### Response: SELECT SUM("Area km 2") FROM table_77208 WHERE "Official Name" = 'allardville' AND "Population" < '2,151'