user: Question: Which attendance number was taken on November 21, 2004?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 12, 2004', 'at Chicago Bears', 'W 20-16', '61,535']
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Date" = 'November 21, 2004';