What is the original air date of the episode directed by Terrence Nightingall?
CREATE TABLE table_17356205_1 (original_air_date VARCHAR, directed_by VARCHAR)
SELECT original_air_date FROM table_17356205_1 WHERE directed_by = "Terrence Nightingall"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_17356205_1 (original_air_date VARCHAR, directed_by VARCHAR) Question: What is the original air date of the episode directed by Terrence Nightingall? [/INST] SELECT original_air_date FROM table_17356205_1 WHERE directed_by = "Terrence Nightingall" </s>