Anchor: The black dog is catching a ball, while the white one watches.
Entailed: a dog has a ball in its mouth
Contradiction: Two cats play together with yarn.
Contradiction: Two dogs play with two cats as the birds watch from their cages.
Contradiction: a dog practices yoga on Mondays
Contradiction: The two dogs are both chasing after the ball.
Contradiction: A dog catching a flying Frisbee.