user: Question: How many people watch Essendon as an away team?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['North Melbourne', '12.10 (82)', 'South Melbourne', '11.14 (80)', 'Arden Street Oval', 6000.0, '4 August 1928']
SQL:

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