user: Question: When was the event in the City of Baden?
Columns: ['Date', 'City', 'Event', 'Winner', 'Prize']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['16–17 September 2005', 'Barcelona', 'Barcelona Open 2005', 'Jan Boubli', '€416,000']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "City" = 'Baden';