user: Question: What is the largest crowd for a Melbourne 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: ['Geelong', '16.26 (122)', 'South Melbourne', '9.9 (63)', 'Kardinia Park', 33953.0, '20 April 1963']
SQL:

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