Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_18 (grid INTEGER, driver VARCHAR, laps VARCHAR)
### Question:
What is the low grid for gerhard berger for laps over 56?
### Answer:
SELECT MIN(grid) FROM table_name_18 WHERE driver = "gerhard berger" AND laps > 56