user: Question: What day does the home side score 13.13 (91)?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Footscray', '12.12 (84)', 'South Melbourne', '17.18 (120)', 'Western Oval', 21000.0, '26 May 1934']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Home team score" = '13.13 (91)';