user: Question: Who was the away team at the home game of North Melbourne?
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', '16.22 (118)', 'St Kilda', '11.7 (73)', 'Western Oval', 13966.0, '16 August 1980']
SQL:

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