user: Question: In the match as Corio Oval, who 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: ['Melbourne', '18.15 (123)', 'North Melbourne', '11.13 (79)', 'MCG', 3944.0, '5 September 1931']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Venue" = 'Corio Oval';