The cow needs the mouse. The mouse is blue. The mouse sees the cow. If something chases the mouse then the mouse chases the cow. If something needs the cow then it sees the mouse. If something sees the cow then the cow is green. If something is green and it chases the mouse then the mouse is green. If something needs the mouse and it does not see the cow then the mouse is blue. If the mouse needs the cow and something does not see the mouse then the cow is green. If something chases the cow and it does not see the mouse then the mouse is big. If something is not green then it is red.
The mouse sees the cow.