user: Question: Who faced Collingwood as an 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: ['Melbourne', '6.12 (48)', 'St Kilda', '9.6 (60)', 'MCG', 10000.0, '11 August 1951']
SQL:

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