user: Question: What is the average crowd size when the home team score was 8.11 (59)?
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', '12.10 (82)', 'Richmond', '10.12 (72)', 'Western Oval', 16672.0, '29 August 1970']
SQL:

assistant: SELECT AVG("Crowd") FROM "Table" WHERE "Home team score" = '8.11 (59)';