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_76 (grid INTEGER, driver VARCHAR, laps VARCHAR)
### Question:
What was Jack Brabham's highest grid when his laps were more than 90?
### Answer:
SELECT MAX(grid) FROM table_name_76 WHERE driver = "jack brabham" AND laps > 90