The mouse sees the squirrel. The squirrel needs the mouse. If someone is blue and they see the mouse then they chase the mouse. If someone chases the squirrel then the squirrel is blue. If someone does not need the mouse and the mouse does not need the squirrel then the mouse chases the squirrel. If someone chases the squirrel and the squirrel is blue then they chase the mouse. If someone is not red and they do not chase the mouse then they do not chase the squirrel. If someone sees the mouse and they do not chase the mouse then the mouse chases the squirrel.
The mouse is not blue.