The bear eats the cat. The cat eats the lion. The lion eats the cat. If something needs the lion then the lion is rough. If something does not chase the lion then it is green. If something needs the bear then it eats the lion. If the cat needs the bear and the cat eats the lion then the cat is rough. If the cat eats the lion then the lion is not big. If something does not need the lion then the lion does not need the bear. If the lion needs the cat and the cat needs the lion then the cat needs the bear. If the cat is green and something does not eat the cat then the cat is not rough.
The cat needs the lion.