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_17 (year VARCHAR, team VARCHAR, rank VARCHAR)
### Question:
Which year had a team of Aprilia and a rank of 4th?
### Answer:
SELECT year FROM table_name_17 WHERE team = "aprilia" AND rank = "4th"