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_99 (pick INTEGER, position VARCHAR, school VARCHAR)
### Question:
What's the lowest pick for a defensive back at Drake?
### Answer:
SELECT MIN(pick) FROM table_name_99 WHERE position = "defensive back" AND school = "drake"