user: Question: What home team has had a crowd bigger than 20000?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Geelong', '16.19 (115)', 'Richmond', '13.9 (87)', 'Kardinia Park', 18500.0, '16 August 1947']
SQL:

assistant: SELECT "Home team" FROM "Table" WHERE "Crowd" > 20000.0;