How many different titles does the episode originally aired on September 27, 1984 have?
CREATE TABLE table_2818164_2 (title VARCHAR, original_air_date VARCHAR)
SELECT COUNT(title) FROM table_2818164_2 WHERE original_air_date = "September 27, 1984"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2818164_2 (title VARCHAR, original_air_date VARCHAR) Question: How many different titles does the episode originally aired on September 27, 1984 have? [/INST] SELECT COUNT(title) FROM table_2818164_2 WHERE original_air_date = "September 27, 1984" </s>