user: Question: How large was the crowd when the away team scored 11.15 (81)?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Richmond', '19.23 (137)', 'South Melbourne', '12.14 (86)', 'MCG', 25296.0, '3 May 1975']
SQL:

assistant: SELECT "Crowd" FROM "Table" WHERE "Away team score" = '11.15 (81)';