user: Question: Name the total number in attendance for when the bulls visited
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Leading scorer', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['April 1, 2008', 'Hornets', '98–97', 'Magic', 'Hedo Türkoğlu (26)', 17519.0, '47–28']
SQL:

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