What's the original air date of the episode with production code 2T6719?
CREATE TABLE table_12159115_2 (original_air_date VARCHAR, production_code VARCHAR)
SELECT original_air_date FROM table_12159115_2 WHERE production_code = "2T6719"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_12159115_2 (original_air_date VARCHAR, production_code VARCHAR) Question: What's the original air date of the episode with production code 2T6719? [/INST] SELECT original_air_date FROM table_12159115_2 WHERE production_code = "2T6719" </s>