What day did Yugoslavia play Luxembourg?
CREATE TABLE table_name_56 (
    date VARCHAR,
    opponent VARCHAR
)
SELECT date FROM table_name_56 WHERE opponent = "luxembourg"
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 day did Yugoslavia play Luxembourg? ### Input: CREATE TABLE table_name_56 (
    date VARCHAR,
    opponent VARCHAR
) ### Response: SELECT date FROM table_name_56 WHERE opponent = "luxembourg"