The dog does not eat the lion. The dog does not eat the mouse. The dog is rough. The lion does not chase the dog. The lion chases the mouse. The lion eats the dog. The lion is green. The lion is nice. The lion is rough. The lion is young. The lion needs the dog. The lion needs the mouse. The mouse eats the dog. The mouse eats the lion. The mouse is not green. The mouse needs the lion. If someone eats the dog and the dog is nice then they need the dog. If someone does not need the dog then they need the lion.
The dog does not need the lion.