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_13 (time VARCHAR, rider VARCHAR, manufacturer VARCHAR, grid VARCHAR)
### Question:
Name the Time which has a Manufacturer of aprilia, and a Grid smaller than 16, and a Rider of sandro cortese?
### Answer:
SELECT time FROM table_name_13 WHERE manufacturer = "aprilia" AND grid < 16 AND rider = "sandro cortese"