Anchor: Two ballet dancers are in the middle of a choreographed dance.
Entailed: The two people are doing ballet.
Contradiction: Two young men perform break dancing on the sidewalk.
Contradiction: A third party can still not deliver a letter if there is the proper postage on it.
Contradiction: Two people are using their computers.
Contradiction: a rider jumps his bike into the air
Contradiction: We went through the forest down to the village.