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_66 (round VARCHAR, overall VARCHAR, position VARCHAR)
### Question:
How many rounds have an Overall larger than 17, and a Position of quarterback?
### Answer:
SELECT COUNT(round) FROM table_name_66 WHERE overall > 17 AND position = "quarterback"