user: Question: What CD has a catalog # of PCR 502?
Columns: ['Catalog #', 'Title', 'Year', 'Composer', 'Released']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['PCR 501', 'Master Of Ballantrae', '1984', 'Bruce Broughton', 1998.0]
SQL:

assistant: SELECT "Title" FROM "Table" WHERE "Catalog #" = 'PCR 502';