user: Question: What was the total Attendance for Games while Chicago was the visiting Team?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['February 2', 'Minnesota', '4 – 1', 'Columbus', 'Norrena', 18529.0, '25–23–6']
SQL:

assistant: SELECT SUM("Attendance") FROM "Table" WHERE "Visitor" = 'Chicago';