user: Question: When the crowd was 8642 what was the away team's score?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Ground', 'Date', 'Crowd']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Collingwood', '12.14 (86)', 'St Kilda', '10.8 (68)', 'Colonial Stadium', 'Friday, 16 February', 30072.0]
SQL:

assistant: SELECT "Away team score" FROM "Table" WHERE "Crowd" = 8642.0;