The cat chases the cow. The cat chases the mouse. The cat is big. The cat is nice. The cat is round. The cat needs the cow. The cat needs the mouse. The cat sees the cow. The cow is nice. The cow needs the cat. The cow needs the mouse. The cow sees the cat. The mouse chases the cow. The mouse needs the cow. The mouse sees the cow. If someone sees the cat and the cat is young then they are green. If someone chases the cow then the cow is young.
The cow does not need the mouse.