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_20 (grid VARCHAR, laps VARCHAR, rider VARCHAR)
### Question:
When rider John Hopkins had 21 laps, what was the grid?
### Answer:
SELECT grid FROM table_name_20 WHERE laps = "21" AND rider = "john hopkins"