The cow chases the squirrel. The cow is big. The cow likes the dog. The cow needs the squirrel. The dog chases the cow. The dog is cold. The dog is red. The squirrel needs the dog. The squirrel needs the tiger. The tiger chases the squirrel. If the cow is young and the cow likes the dog then the dog likes the tiger. If something is cold then it likes the cow.
The cow does not need the squirrel.