The cow is young. The dog eats the cow. The dog is blue. The dog is kind. The dog sees the mouse. The mouse is nice. The mouse needs the dog. If something needs the dog then it sees the dog. If something eats the mouse then it eats the dog. If something eats the cow then the cow eats the mouse. If something is young and it needs the dog then it needs the mouse. If the dog needs the cow then the cow eats the dog. If something eats the dog and the dog sees the mouse then the mouse sees the cow.
The mouse does not see the mouse.