user: Question: What was the attendance for the game when the challenge leader was at Big East (4-2)?
Columns: ['Date', 'Time', 'Big East Team', 'SEC Team', 'Location', 'Television', 'Attendance', 'Winner', 'Challenge Leader']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Thurs, Nov. 29', '7:00 pm', 'Notre Dame', '#8 Kentucky', 'Edmund P. Joyce Center • South Bend, IN', 'ESPN2', 9149.0, 'Notre Dame, 64-50', 'Big East (1-0)']
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Challenge Leader" = 'Big East (4-2)';