user: Question: When the away team scored 7.9 (51), what was the smallest crowd that turned out?
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', '5.16 (46)', 'St Kilda', '16.18 (114)', 'Western Oval', 18107.0, '9 August 1975']
SQL:

assistant: SELECT MIN("Crowd") FROM "Table" WHERE "Away team score" = '7.9 (51)';