The cow needs the dog. The dog needs the cow. The tiger does not need the dog. If something eats the cow then it needs the dog. If something is rough then it needs the cow. If the tiger is green and the tiger does not eat the cow then the tiger sees the dog. If the dog is not rough then the dog does not eat the tiger. If something is rough then it sees the tiger. If something eats the dog then it needs the tiger.
The tiger does not need the dog.
@0: The cow needs the dog.[(triple1)] The dog needs the cow.[(triple2)] The tiger does not need the dog.[(triple3)]