The bear needs the tiger. The mouse eats the tiger. The tiger eats the mouse. If someone is green and nice then they eat the mouse. If someone likes the mouse then the mouse needs the bear. If someone is red then they need the bear. If someone is red and they need the mouse then the mouse is green. If the mouse is green and the mouse eats the bear then the bear needs the mouse. If someone needs the mouse and the mouse eats the bear then they are red. If the mouse eats the tiger then the tiger likes the mouse. If someone needs the mouse then they eat the tiger.
The bear does not need the bear.