What date is the Portuguese Grand Prix?
CREATE TABLE table_name_30 (
    date VARCHAR,
    grand_prix VARCHAR
)
SELECT date FROM table_name_30 WHERE grand_prix = "portuguese grand prix"
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 date is the Portuguese Grand Prix? ### Input: CREATE TABLE table_name_30 (
    date VARCHAR,
    grand_prix VARCHAR
) ### Response: SELECT date FROM table_name_30 WHERE grand_prix = "portuguese grand prix"