user: Question: How many attended the game with north melbourne as the away side?
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', '18.12 (120)', 'Melbourne', '13.8 (86)', 'Glenferrie Oval', 10000.0, '14 July 1951']
SQL:

assistant: SELECT "Crowd" FROM "Table" WHERE "Away team" = 'north melbourne';