Table:
text: 1966 San Francisco 49ers season
Schedule
Schedule
Week Date_ Opponent Result_ Attendance
11 November 20, 1966 Philadelphia Eagles L 35-34 31993
12 November 24, 1966 at Detroit Lions W 41-14 53189
13 December 4, 1966 at Green Bay Packers L 20-7 48725
14 December 11, 1966 Chicago Bears W 41-14 37170
15 December 18, 1966 Baltimore Colts L 30-14 40005

Question: Who is the November 20, 1966 opponent for the San Francisco 49ers' 1966 season?