What is the Format of the release with Catalog number RTRADLP491?
CREATE TABLE table_name_15 (
    format VARCHAR,
    catalog VARCHAR
)
SELECT format FROM table_name_15 WHERE catalog = "rtradlp491"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the Format of the release with Catalog number RTRADLP491? ### Input: CREATE TABLE table_name_15 (
    format VARCHAR,
    catalog VARCHAR
) ### Response: SELECT format FROM table_name_15 WHERE catalog = "rtradlp491"