Anne is nice. Anne is quiet. Charlie is blue. Charlie is quiet. Charlie is rough. Dave is not furry. Dave is nice. Harry is quiet. Harry is rough. Harry is smart. All quiet people are smart. All furry, blue people are young. If Harry is nice then Harry is furry. If Harry is quiet and Harry is nice then Harry is rough. Smart people are furry. If Dave is young and Dave is not rough then Dave is furry. If Dave is furry and Dave is not smart then Dave is not rough. If someone is rough and not young then they are not blue.
Harry is not furry.