user: Question: The away team scored 15.9 (99) at what venue?
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', '18.15 (123)', 'St Kilda', '3.6 (24)', 'Windy Hill', 5000.0, '28 July 1945']
SQL:

assistant: SELECT "Venue" FROM "Table" WHERE "Away team score" = '15.9 (99)';