user: Question: On what Date was the Attendance 75,891?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 5, 1993', 'at Chicago Bears', 'W 26–20', '66,900']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" = '75,891';