user: Question: What date was Richmond the home team?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['North Melbourne', '15.17 (107)', 'St Kilda', '10.12 (72)', 'Arden Street Oval', 9000.0, '19 August 1933']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Home team" = 'Richmond';