The cat is not young. The mouse chases the cat. The mouse needs the cat. If something is green and it chases the mouse then it needs the mouse. If the cat needs the mouse and the cat visits the mouse then the mouse chases the cat. If something chases the cat and it does not visit the cat then it needs the cat.
The mouse does not need the mouse.
@0: The cat is not young.[(triple1)] The mouse chases the cat.[(triple2)] The mouse needs the cat.[(triple3)]