The bear is round. The bear needs the tiger. The bear visits the tiger. The cat needs the bear. The cat needs the tiger. The cat visits the tiger. The mouse chases the bear. The mouse chases the cat. The mouse is rough. The mouse needs the cat. The tiger chases the bear. The tiger is nice. The tiger needs the mouse. The tiger visits the bear. If something is round then it visits the mouse. If something chases the tiger and the tiger visits the bear then the tiger chases the mouse. Nice, rough things are round. If something needs the bear and it visits the tiger then the tiger is nice. If something visits the mouse then it chases the tiger. If something chases the mouse then the mouse is nice. If something chases the cat then the cat chases the mouse.
The bear does not need the bear.