user: Question: What date did the home team Richmond play?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Collingwood', '18.19 (127)', 'Melbourne', '8.9 (57)', 'Victoria Park', 14000.0, '12 September 1931']
SQL:

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