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_18 (format VARCHAR, date VARCHAR, catalog VARCHAR)
### Question:
In what format was the release that was dated 7 April 2003 from catalog 584 2112?
### Answer:
SELECT format FROM table_name_18 WHERE date = "7 april 2003" AND catalog = "584 2112"