user: Question: Which Catalog has a Region of Canada and a Format of CD/DVD?
Columns: ['Region', 'Date', 'Label', 'Format', 'Catalog']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Europe', 'October 11, 2004', 'Sony BMG , Columbia', 'CD', 'COL 518748 9']
SQL:

assistant: SELECT "Catalog" FROM "Table" WHERE "Region" = 'Canada' AND "Format" = 'CD/DVD';