Anchor: Two black dogs are running in the grass, one has a green ball in his mouth.
Entailed: Two dogs run in the grass.
Contradiction: Two dogs sit in the sand.
Contradiction: A man wearing a blue jacket standing at the entrance to a night club.
Contradiction: 20,000 spectators were able to watch gladiator battles.
Contradiction: It's likely not
Contradiction: A woman jogging by the ocean.