Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_13301516_1 (no_in_series VARCHAR, original_air_date VARCHAR)
### Question:
How many episodes originally aired on April 29, 2008?
### Answer:
SELECT COUNT(no_in_series) FROM table_13301516_1 WHERE original_air_date = "April 29, 2008"