Anchor: The man is playing in the yard with two dogs.
Entailed: There are dogs in the yard.
Contradiction: The man is playing with his dogs in the living room.
Contradiction: Two mean eating the fish they caught after a day of fishing in the river.
Contradiction: Scale economies are correlated with more efficient postal service operations.
Contradiction: An arson burns down a forest.
Contradiction: Stephanie Trotter is a reporter for the NBC station.