user: Question: Who was Richmond's away 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: ['Hawthorn', '13.10 (88)', 'South Melbourne', '7.14 (56)', 'Glenferrie Oval', 15000.0, '21 August 1943']
SQL:

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