user: Question: Who 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: ['North Melbourne', '10.13 (73)', 'Richmond', '10.14 (74)', 'Arden Street Oval', 12000.0, '7 June 1926']
SQL:

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