user: Question: How many people in the crowd with North Melbourne as an 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', '12.8 (80)', 'Melbourne', '17.10 (112)', 'Glenferrie Oval', 10000.0, '4 June 1927']
SQL:

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