user: Question: What was the home team when Carlton was the 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: ['South Melbourne', '31.9 (195)', 'Footscray', '15.16 (106)', 'Lake Oval', 9815.0, '4 August 1979']
SQL:

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