user: Question: What age group has a time of 6:37.73 at the 200m breaststroke?
Columns: ['Pool', 'Age Group', 'Time', 'Event', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['LC', '90-94', '1:25.91', '50m breaststroke', 'December 18, 2005']
SQL:

assistant: SELECT "Age Group" FROM "Table" WHERE "Event" = '200m breaststroke' AND "Time" = '6:37.73';