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_name_55 (format VARCHAR, date VARCHAR)
### Question:
What format was released April 16, 2009?
### Answer:
SELECT format FROM table_name_55 WHERE date = "april 16, 2009"