user: Question: What was the lowest attendance at Windy Hill?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Footscray', '13.16 (94)', 'North Melbourne', '20.13 (133)', 'Western Oval', 23457.0, '14 April 1979']
SQL:

assistant: SELECT MIN("Crowd") FROM "Table" WHERE "Venue" = 'Windy Hill';