Anchor: The black dog win the fetching contest as it returns from the water
Entailed:  Thedog wins the fetching contest as it returns from the water
Contradiction: A cat is playing with yarn.
Contradiction: A young blond person in a black outfit is drinking a beer.
Contradiction: He started a law practice for Latino workers.
Contradiction: Two people running away from each other.
Contradiction: I interrupted to say that it might have been done quite a while ago.