What is the maximum population of the land with an area of 276.84 km2?
CREATE TABLE table_21284 (
    "Official Name" text,
    "Status" text,
    "Area km 2" text,
    "Population" real,
    "Census Ranking" text
)
SELECT MAX("Population") FROM table_21284 WHERE "Area km 2" = '276.84'
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 maximum population of the land with an area of 276.84 km2? ### Input: CREATE TABLE table_21284 (
    "Official Name" text,
    "Status" text,
    "Area km 2" text,
    "Population" real,
    "Census Ranking" text
) ### Response: SELECT MAX("Population") FROM table_21284 WHERE "Area km 2" = '276.84'