The cow needs the tiger. The dog does not need the tiger. The tiger chases the dog. If the cow visits the tiger then the cow is nice. If the dog is not rough then the dog does not chase the tiger. If someone is rough then they are kind. If someone visits the dog and the dog is blue then the dog chases the tiger. If the tiger visits the cow and the tiger chases the dog then the tiger is rough. If someone needs the cow and the cow is not rough then the cow chases the tiger. If someone is nice and not rough then they need the dog. If someone does not need the dog then the dog visits the tiger.
The dog needs the tiger.