user: Question: What is Date, when Home Team is Richmond?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Ground', 'Date', 'Time']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Richmond', '22.15 (147)', 'Sydney', '10.7 (67)', 'Lavington Oval , Albury', 'Saturday, 13 February 1993', '12:00 PM']
SQL:

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