user: Question: What was the average amount of spectators when the away team scored 14.7 (91)?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Collingwood', '12.13 (85)', 'South Melbourne', '8.9 (57)', 'Victoria Park', 29237.0, '9 May 1964']
SQL:

assistant: SELECT AVG("Crowd") FROM "Table" WHERE "Away team score" = '14.7 (91)';