user: Question: Who is the home side when North Melbourne is 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: ['Richmond', '6.9 (45)', 'South Melbourne', '12.17 (89)', 'Punt Road Oval', 27650.0, '25 April 1961']
SQL:

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