The bear chases the dog. The bear eats the dog. The bear is green. The bear is round. The bear is young. The bear needs the dog. The dog eats the bear. The dog is big. The dog is nice. The dog is young. If something chases the dog then the dog is big. If something eats the dog then the dog chases the bear. If something is young and it needs the dog then it chases the bear. If the dog needs the bear and the dog is young then the dog chases the bear. If something is round then it needs the bear. If something chases the bear then it is green. If something chases the dog then it chases the bear. If the bear chases the dog and the dog needs the bear then the bear needs the dog.
The dog does not need the bear.