user: Question: Which Away team has a Home team score of 7.8 (50)?
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', '7.8 (50)', 'St Kilda', '11.15 (81)', 'Arden Street Oval', 4000.0, '29 August 1931']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Home team score" = '7.8 (50)';