The bear chases the lion. The bear needs the mouse. The lion eats the bear. The lion eats the mouse. The mouse does not eat the bear. The tiger eats the bear. The tiger eats the mouse. If the tiger does not need the mouse then the tiger is cold. If the tiger eats the bear and the tiger eats the lion then the tiger eats the mouse. If the tiger chases the lion then the lion chases the bear.
The lion does not chase the bear.