user: Question: When Melbourne was the away team, what was the lowest crowd turnout they had?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['St Kilda', '18.9 (117)', 'South Melbourne', '6.12 (48)', 'Moorabbin Oval', 18709.0, '24 July 1965']
SQL:

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