user: Question: What was the lowest crowd size when Carlton was the 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: ['Hawthorn', '13.19 (97)', 'St Kilda', '18.14 (122)', 'Princes Park', 14072.0, '19 June 1976']
SQL:

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