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_51 (format VARCHAR, catalog VARCHAR)
### Question:
What was the format for catalog 660-51-015?
### Answer:
SELECT format FROM table_name_51 WHERE catalog = "660-51-015"