The cat visits the dog. The dog does not need the cat. The squirrel does not visit the dog. The tiger sees the squirrel. If someone needs the cat and they do not need the tiger then the cat is not rough. If the dog visits the tiger and the dog does not see the tiger then the tiger does not need the dog. If someone needs the squirrel then they are not rough.
The tiger does not need the tiger.
@0: The cat visits the dog.[(triple1)] The dog does not need the cat.[(triple2)] The squirrel does not visit the dog.[(triple3)] The tiger sees the squirrel.[(triple4)]