How many episodes originally aired on April 29, 2008?
CREATE TABLE table_13301516_1 (no_in_series VARCHAR, original_air_date VARCHAR)
SELECT COUNT(no_in_series) FROM table_13301516_1 WHERE original_air_date = "April 29, 2008"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_13301516_1 (no_in_series VARCHAR, original_air_date VARCHAR) Question: How many episodes originally aired on April 29, 2008? [/INST] SELECT COUNT(no_in_series) FROM table_13301516_1 WHERE original_air_date = "April 29, 2008" </s>