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_23 (license VARCHAR, release_date VARCHAR)
### Question:
Which licence has a release date of 2009-08?
### Answer:
SELECT license FROM table_name_23 WHERE release_date = "2009-08"