The bear chases the dog. The bear is young. The bear needs the dog. The dog is young. The dog needs the tiger. The rabbit chases the bear. The rabbit is nice. The tiger chases the dog. The tiger is young. The tiger visits the bear. The tiger visits the dog. The tiger visits the rabbit. If someone is young then they are nice. If someone needs the bear then the bear chases the rabbit. If someone needs the dog and the dog is round then the dog chases the rabbit.
The dog is not nice.