The cow needs the mouse. The dog needs the mouse. The mouse needs the dog. If someone is big and they chase the dog then the dog chases the cow. If someone needs the mouse then the mouse eats the dog. If someone chases the mouse and the mouse eats the cow then they need the mouse. If someone chases the dog and they need the dog then they need the cow. If someone chases the dog then the dog does not need the mouse. If someone does not chase the cow then the cow does not chase the dog. If someone does not need the mouse then the mouse does not chase the dog. If the cow needs the mouse and the dog does not chase the cow then the mouse is nice.
The mouse is nice.