Bob is kind. Dave is nice. Dave is red. Erin is blue. Erin is green. Erin is kind. Erin is nice. Erin is red. Harry is green. Harry is red. If Bob is rough then Bob is nice. If something is kind and round then it is nice. If something is nice then it is blue. Green things are rough. If something is kind then it is round. All rough, green things are kind. If something is nice then it is rough. If something is round and red then it is nice. Kind, blue things are nice.
Dave is not kind.