user: Question: What is the highest crowd population when the away team is Geelong?
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', '4.9 (33)', 'St Kilda', '5.17 (47)', 'Arden Street Oval', 5000.0, '26 June 1926']
SQL:

assistant: SELECT MAX("Crowd") FROM "Table" WHERE "Away team" = 'Geelong';