What is the low grid for gerhard berger for laps over 56?
CREATE TABLE table_name_18 (
    grid INTEGER,
    driver VARCHAR,
    laps VARCHAR
)
SELECT MIN(grid) FROM table_name_18 WHERE driver = "gerhard berger" AND laps > 56
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 is the low grid for gerhard berger for laps over 56? ### Input: CREATE TABLE table_name_18 (
    grid INTEGER,
    driver VARCHAR,
    laps VARCHAR
) ### Response: SELECT MIN(grid) FROM table_name_18 WHERE driver = "gerhard berger" AND laps > 56