user: Question: What date was the 200m breaststroke event?
Columns: ['Event', 'Time', 'Nationality', 'Date', 'Meet', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['50m freestyle', '24.07', 'United States', '17 August 2008', 'Olympic Games', 'Beijing , China']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Event" = '200m breaststroke';