user: Question: Who was the away team at the game played at Lake Oval?
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', '16.14 (110)', 'Melbourne', '14.15 (99)', 'Princes Park', 8850.0, '20 August 1977']
SQL:

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