user: Question: What is the size of the smallest crowd that watched a game at Arden Street 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', '15.8 (98)', 'Essendon', '14.15 (99)', 'Princes Park', 36736.0, '15 August 1981']
SQL:

assistant: SELECT MIN("Crowd") FROM "Table" WHERE "Venue" = 'Arden Street Oval';