user: Question: What record had an ALCA-271 CD?
Columns: ['Region', 'Date', 'Label', 'Format', 'Catalog']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Japan', 'May 25, 1979', 'Alfa Records', 'stereo LP', 'ALR-6017']
SQL:

assistant: SELECT "Region" FROM "Table" WHERE "Format" = 'CD' AND "Catalog" = 'ALCA-271';