user: Question: What was the average crowd size for the game where the away team scored 10.11 (71)?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Melbourne', '8.9 (57)', 'South Melbourne', '10.11 (71)', 'MCG', 27000.0, '17 May 1952']
SQL:

assistant: SELECT AVG("Crowd") FROM "Table" WHERE "Away team score" = '10.11 (71)';