What was the fastest lap at the Mexican Grand Prix?
CREATE TABLE table_1137718_2 (
    fastest_lap VARCHAR,
    grand_prix VARCHAR
)
SELECT fastest_lap FROM table_1137718_2 WHERE grand_prix = "Mexican 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 was the fastest lap at the Mexican Grand Prix? ### Input: CREATE TABLE table_1137718_2 (
    fastest_lap VARCHAR,
    grand_prix VARCHAR
) ### Response: SELECT fastest_lap FROM table_1137718_2 WHERE grand_prix = "Mexican grand_prix"