The bear does not eat the cat. The cat does not need the lion. The lion eats the cat. The mouse eats the lion. If the cat is blue then the cat is not nice. If the cat needs the bear then the bear eats the lion. If the mouse is nice then the mouse is red. If something needs the mouse and it chases the cat then the cat needs the lion. If something needs the lion and it chases the lion then the lion eats the cat. If something needs the mouse then it does not chase the bear. If something eats the bear then it is rough. If something does not need the lion and the lion does not chase the mouse then the lion is blue.
The mouse does not need the bear.