user: Question: Which date has a Crowd greater than 28000, and a Home team of geelong?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Hawthorn', '10.9 (69)', 'Melbourne', '9.16 (70)', 'Glenferrie Oval', 7000.0, '23 July 1938']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Crowd" > 28000.0 AND "Home team" = 'geelong';