user: Question: What is the crowd size of the game where the away team scored 8.15 (63)?
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', '12.21 (93)', 'Hawthorn', '9.12 (66)', 'Windy Hill', 23000.0, '16 April 1960']
SQL:

assistant: SELECT "Crowd" FROM "Table" WHERE "Away team score" = '8.15 (63)';