user: Question: Who was Carlton's home team opponent?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Geelong', '12.6 (78)', 'North Melbourne', '9.18 (72)', 'Kardinya Park', 14415.0, '1 July 1967']
SQL:

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