user: Question: What team was the away team when they 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: ['Geelong', '12.8 (80)', 'Richmond', '15.8 (98)', 'Kardinia Park', 21655.0, '21 May 1966']
SQL:

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