user: Question: What was the away team when the venue was 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: ['Carlton', '16.14 (110)', 'St Kilda', '10.11 (71)', 'Princes Park', 22988.0, '18 July 1970']
SQL:

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