The cat chases the mouse. The cat chases the tiger. The cat is green. The cat needs the tiger. The cat sees the mouse. The cat sees the tiger. The mouse chases the cat. The mouse needs the tiger. The mouse sees the cat. The mouse sees the tiger. The tiger chases the cat. The tiger is green. The tiger needs the mouse. The tiger sees the cat. The tiger sees the mouse. If someone needs the cat then the cat chases the mouse. If someone chases the tiger then the tiger is young.
The cat does not need the mouse.