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_40 (format_s_ VARCHAR, date VARCHAR)
### Question:
What is the Format(s) of the release on September 23, 2008?
### Answer:
SELECT format_s_ FROM table_name_40 WHERE date = "september 23, 2008"