user: Question: What is the average crowd size for games with Hawthorn as the home side?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Hawthorn', '10.10 (70)', 'St Kilda', '12.14 (86)', 'Glenferrie Oval', 5000.0, '4 September 1926']
SQL:

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