What was the lowest attendance at a game against the St. Louis Cardinals?
CREATE TABLE table_name_91 (
    attendance INTEGER,
    opponent VARCHAR
)
SELECT MIN(attendance) FROM table_name_91 WHERE opponent = "st. louis cardinals"
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 lowest attendance at a game against the St. Louis Cardinals? ### Input: CREATE TABLE table_name_91 (
    attendance INTEGER,
    opponent VARCHAR
) ### Response: SELECT MIN(attendance) FROM table_name_91 WHERE opponent = "st. louis cardinals"