What's the highest grid of Ronnie Bremer, who had more than 18 points?
CREATE TABLE table_name_91 (
    grid INTEGER,
    driver VARCHAR,
    points VARCHAR
)
SELECT MAX(grid) FROM table_name_91 WHERE driver = "ronnie bremer" AND points > 18
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's the highest grid of Ronnie Bremer, who had more than 18 points? ### Input: CREATE TABLE table_name_91 (
    grid INTEGER,
    driver VARCHAR,
    points VARCHAR
) ### Response: SELECT MAX(grid) FROM table_name_91 WHERE driver = "ronnie bremer" AND points > 18