user: Question: Which team played as the home team when North Melbourne played as away?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Essendon', '13.18 (96)', 'North Melbourne', '8.15 (63)', 'Windy Hill', 14864.0, '5 June 1971']
SQL:

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