Dave is not furry. Dave is quiet. Dave is round. Harry is not blue. Harry is furry. Harry is kind. Harry is round. All quiet, kind people are blue. If someone is not round then they are young. If someone is not furry then they are not kind. If someone is blue then they are not nice. If someone is round and furry then they are nice. If someone is not round and not furry then they are not blue. If someone is young then they are blue. If someone is not nice then they are young.
Harry is furry.