The bear eats the squirrel. The cat needs the squirrel. The cow chases the bear. The cow is big. The cow is young. The cow needs the bear. The squirrel does not chase the cat. If the squirrel needs the cat then the squirrel does not chase the cow. If something eats the squirrel and it eats the cat then it does not need the bear. If something does not chase the bear and it does not need the squirrel then the bear eats the cat.
The squirrel eats the bear.