user: Question: What is the download of the Varies catch-up period?
Columns: ['Service name', 'Owner', 'Catch-up period', 'Streamed', 'Download', 'Technology']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['4oD', 'Channel Four Television Corporation', 'Varies', 'Yes', 'Yes', 'Flash']
SQL:

assistant: SELECT "Download" FROM "Table" WHERE "Catch-up period" = 'Varies';