Dave is not cold. Dave is green. Dave is white. Harry is green. Harry is not round. Harry is white. Harry is not young. All white, young things are blue. If something is white and not green then it is not young. If something is green and not nice then it is blue. If something is not round then it is not nice. If something is not white and not nice then it is not young. If something is young and not blue then it is not white.
Harry is not nice.