The cat is nice. The cat is rough. The cat likes the lion. The cat likes the mouse. The cat needs the mouse. The cat visits the lion. The lion is nice. The lion is rough. The lion is young. The lion likes the cat. The lion needs the cat. The lion visits the mouse. The mouse is rough. The mouse likes the cat. The mouse likes the lion. If the lion visits the mouse then the mouse is young. If someone likes the cat then they need the mouse.
The mouse does not need the mouse.