user: Question: What is the release date of catalogue number DW023?
Columns: ['Catalogue number', 'Artist', 'Release title', 'Format', 'Release date']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['DW001', 'The Clear Spots', 'Mountain Rock', 'CD', 2006.0]
SQL:

assistant: SELECT "Release date" FROM "Table" WHERE "Catalogue number" = 'DW023';