user: Question: What home team has Richmond listed as their 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: ['Hawthorn', '7.13 (55)', 'North Melbourne', '3.12 (30)', 'Glenferrie Oval', 11000.0, '9 June 1956']
SQL:

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