user: Question: What is the average crowd for Carlton?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['North Melbourne', '9.14 (68)', 'St Kilda', '11.16 (82)', 'Arden Street Oval', 13000.0, '3 June 1961']
SQL:

assistant: SELECT AVG("Crowd") FROM "Table" WHERE "Away team" = 'Carlton';