The bear needs the mouse. The lion chases the mouse. The lion needs the mouse. The mouse chases the lion. The mouse eats the squirrel. The squirrel chases the bear. The squirrel eats the bear. If someone is not red then they do not need the lion. If someone eats the mouse then the mouse does not eat the bear. If someone chases the squirrel and they do not need the bear then they do not eat the squirrel.
The mouse eats the squirrel.