In what year was Super Bowl XX played?

Which head coach led the San Francisco 49ers to victory in Super Bowl XIX? In what year was Super Bowl XIX played? Richard Dent was named MVP of which Super Bowl? In which city was Super Bowl XX played? Which team did the New York Giants defeat in Super Bowl XXI? Phil Simms was named MVP of which Super Bowl? In which city was Super Bowl XXI played? Which head coach led the New York Giants to victory in Super Bowl XXI?