Dave is furry. Dave is kind. Dave is nice. Dave is smart. Dave is young. Gary is green. Gary is nice. Gary is rough. Gary is smart. Gary is young. If something is furry then it is rough. If something is kind then it is furry. If Dave is green then Dave is furry. All furry, young things are kind. All green, smart things are young. Kind, rough things are young. If Gary is kind then Gary is smart. Rough things are kind.
Dave is not rough.