user: Question: What was the smallest crowd for a Carlton away game?
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', '14.10 (94)', 'South Melbourne', '16.7 (103)', 'Glenferrie Oval', 6500.0, '19 August 1950']
SQL:

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