What is every species when Afinsa is 639?
CREATE TABLE table_1818471_1 (
    species VARCHAR,
    afinsa VARCHAR
)
SELECT species FROM table_1818471_1 WHERE afinsa = 639
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 every species when Afinsa is 639? ### Input: CREATE TABLE table_1818471_1 (
    species VARCHAR,
    afinsa VARCHAR
) ### Response: SELECT species FROM table_1818471_1 WHERE afinsa = 639