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_26 (format VARCHAR, catalogno VARCHAR)
### Question:
Whati s the format for the catalogno of st 491?
### Answer:
SELECT format FROM table_name_26 WHERE catalogno = "st 491"