user: Question: What is the catalog with the region of the United States?
Columns: ['Region', 'Date', 'Label', 'Format', 'Catalog']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['World', 'July 8, 2008', 'DGC', 'Digital download', '—']
SQL:

assistant: SELECT "Catalog" FROM "Table" WHERE "Region" = 'United States';