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"
### Context: CREATE TABLE table_name_15 (format VARCHAR, catalog VARCHAR) ### Question: What is the Format of the release with Catalog number RTRADLP491? ### Answer: SELECT format FROM table_name_15 WHERE catalog = "rtradlp491"