user: Question: What is the total crowd size that saw geelong play as the 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', '10.14 (74)', 'Richmond', '7.10 (52)', 'Arden Street Oval', 13000.0, '21 May 1955']
SQL:

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