How many cfl teams had pick # 21?
CREATE TABLE table_16575609_3 (
    cfl_team VARCHAR,
    pick__number VARCHAR
)
SELECT COUNT(cfl_team) FROM table_16575609_3 WHERE pick__number = 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 cfl teams had pick # 21? ### Input: CREATE TABLE table_16575609_3 (
    cfl_team VARCHAR,
    pick__number VARCHAR
) ### Response: SELECT COUNT(cfl_team) FROM table_16575609_3 WHERE pick__number = 21