What opponents played Waldstadion in a game?
CREATE TABLE table_24951872_2 (
    opponent VARCHAR,
    game_site VARCHAR
)
SELECT opponent FROM table_24951872_2 WHERE game_site = "Waldstadion"
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 opponents played Waldstadion in a game? ### Input: CREATE TABLE table_24951872_2 (
    opponent VARCHAR,
    game_site VARCHAR
) ### Response: SELECT opponent FROM table_24951872_2 WHERE game_site = "Waldstadion"