The cat needs the dog. The dog is not blue. The lion eats the dog. If the cat sees the dog then the dog is blue. If the dog is blue then the dog is red. If something does not eat the cat then it needs the lion. If something needs the cat then it does not eat the lion. If something sees the lion and it does not need the dog then it is not red. If something sees the lion then the lion is big.
The cat does not need the dog.