How many times did episode 6 originally air?
CREATE TABLE table_21550897_1 (original_air_date VARCHAR, _number VARCHAR)
SELECT COUNT(original_air_date) FROM table_21550897_1 WHERE _number = 6
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21550897_1 (original_air_date VARCHAR, _number VARCHAR) Question: How many times did episode 6 originally air? [/INST] SELECT COUNT(original_air_date) FROM table_21550897_1 WHERE _number = 6 </s>