The cat needs the mouse. The mouse is not nice. The rabbit does not need the mouse. If someone is big and they do not chase the cat then the cat does not need the rabbit. If someone is blue and not big then they need the mouse. If someone needs the mouse and they do not see the mouse then the mouse sees the rabbit. If someone is green and they chase the cat then the cat is young. If someone sees the mouse and they chase the cat then the cat does not chase the rabbit. If someone needs the mouse and they are not young then the mouse does not chase the rabbit.
The cat does not need the mouse.