user: Question: In which of North Melbourne's away games was there the lowest crowd?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Footscray', '7.15 (57)', 'Richmond', '11.16 (82)', 'Western Oval', 16573.0, '23 July 1966']
SQL:

assistant: SELECT "Crowd" FROM "Table" WHERE "Away team" = 'North Melbourne';