Anchor: There is a duet being performed by a male on a trumpet and a lady singing.
Entailed: Some people are singing.
Contradiction: Two guys are playing the bass.
Contradiction: The girls are cutting the cake and not letting the man cut it.
Contradiction: a couple pushes a shopping card
Contradiction: The dome remains dark at all times, making it impossible to see at night.
Contradiction: Several workers are repairing tram rails.