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_15637071_1 (fleet_size VARCHAR, iata VARCHAR)
### Question:
How large is the fleet size of the airline with the IATA code of 5j?
### Answer:
SELECT COUNT(fleet_size) FROM table_15637071_1 WHERE iata = "5J"