user: Question: What was the biggest crowd when South Melbourne was an away team?
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', '15.11 (101)', 'Richmond', '14.14 (98)', 'Arden Street Oval', 15359.0, '23 July 1977']
SQL:

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