user: Question: How many people attended when the away team was Richmond?
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', '18.9 (117)', 'South Melbourne', '13.14 (92)', 'Windy Hill', 16000.0, '8 May 1943']
SQL:

assistant: SELECT SUM("Crowd") FROM "Table" WHERE "Away team" = 'Richmond';