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 (purpose VARCHAR, on_air_id VARCHAR)
### Question:
Name the purpose for on-air ID of 2xx
### Answer:
SELECT purpose FROM table_name_13 WHERE on_air_id = "2xx"