Bob is big. Bob is furry. Dave is not big. Dave is rough. Harry is big. Harry is blue. Harry is cold. Harry is not furry. Harry is not quiet. Harry is round. All round, rough things are furry. All quiet things are furry. If something is cold and not blue then it is rough. Furry things are cold. Furry things are cold. If something is not rough then it is big. If something is rough and not big then it is quiet. If Bob is round and Bob is not big then Bob is furry.
Harry is not rough.