Anchor: The white dog is chasing a toy that is attached to a string across the grass.
Entailed: The white dog is chasing after a string-attached toy across the grass.
Contradiction: The white dog is sitting down, watching a toy roll across the grass.
Contradiction: The white dog is chasing a small boy.
Contradiction: A rabbit is running away from a dog.
Contradiction: A dog sitting on a park bench.
Contradiction: The dog is asleep on the couch.