user: Question: How many people watched the game 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: ['Essendon', '9.10 (64)', 'Footscray', '13.15 (93)', 'Windy Hill', 16250.0, '27 July 1974']
SQL:

assistant: SELECT SUM("Crowd") FROM "Table" WHERE "Venue" = 'Lake Oval';