What is the original air date for the episode with a production code of 318?
CREATE TABLE table_15185133_1 (original_air_date VARCHAR, production_code VARCHAR)
SELECT original_air_date FROM table_15185133_1 WHERE production_code = 318
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_15185133_1 (original_air_date VARCHAR, production_code VARCHAR) Question: What is the original air date for the episode with a production code of 318? [/INST] SELECT original_air_date FROM table_15185133_1 WHERE production_code = 318 </s>