The cow chases the tiger. The dog sees the cow. The mouse needs the dog. The tiger needs the dog. If something is young and it chases the dog then it chases the tiger. If something needs the mouse and the mouse chases the tiger then it is cold. If something chases the cow then the cow chases the mouse. If something sees the tiger then the tiger chases the mouse. If something chases the tiger then the tiger chases the dog. All nice things are big. All round things are nice. If something needs the cow and it is round then the cow sees the tiger.
The mouse needs the dog.