user: Question: Which Week has an Attendance of 72,855?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 1, 1991', 'Cincinnati Bengals', 'W 45–14', '72,855']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Attendance" = '72,855';