What was the number in attendance for the Detroit Lions game?
CREATE TABLE table_name_21 (
    attendance VARCHAR,
    opponent VARCHAR
)
SELECT attendance FROM table_name_21 WHERE opponent = "detroit lions"
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 was the number in attendance for the Detroit Lions game? ### Input: CREATE TABLE table_name_21 (
    attendance VARCHAR,
    opponent VARCHAR
) ### Response: SELECT attendance FROM table_name_21 WHERE opponent = "detroit lions"