The bear eats the cow. The cow eats the bear. If something is round then it needs the bear. If something eats the cow then it needs the cow. If something needs the bear and the bear is nice then it is nice. If something does not visit the cow then the cow needs the bear. If something visits the bear and it is nice then the bear is round. If something eats the cow and the cow is not nice then the cow does not visit the bear.
The bear eats the cow.