The cow is cold. The cow is green. The cow is young. The cow likes the mouse. The cow likes the squirrel. The cow needs the mouse. The cow visits the mouse. The mouse is round. The squirrel is green. The squirrel is round. The squirrel is young. The squirrel likes the cow. The squirrel likes the mouse. The squirrel needs the mouse. The squirrel visits the cow. The squirrel visits the mouse. If something visits the squirrel and it needs the squirrel then the squirrel needs the mouse. If the mouse needs the squirrel and the squirrel likes the mouse then the mouse needs the cow.
The mouse does not need the cow.