how many contestants are at least 21 years old ?
CREATE TABLE table_204_144 (
    id number,
    "represent" number,
    "contestant" text,
    "age" number,
    "height" text,
    "hometown" text
)
SELECT COUNT("contestant") FROM table_204_144 WHERE "age" >= 21
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: how many contestants are at least 21 years old ? ### Input: CREATE TABLE table_204_144 (
    id number,
    "represent" number,
    "contestant" text,
    "age" number,
    "height" text,
    "hometown" text
) ### Response: SELECT COUNT("contestant") FROM table_204_144 WHERE "age" >= 21