The bald eagle needs the bear. The bear is young. The cat needs the bear. The tiger is round. If the cat needs the bear and the cat eats the tiger then the bear does not need the tiger. If something needs the cat then it eats the tiger. If something needs the tiger then it does not chase the bear. If something chases the tiger then it is not round. If something needs the bear and it does not chase the bear then it needs the cat. If something is red then it needs the cat. If something is round then it eats the tiger. If something needs the cat and it does not eat the tiger then the cat does not need the tiger.
The cat needs the cat.