Bob is not quiet. Bob is rough. Dave is blue. Dave is not nice. Dave is red. Dave is rough. Dave is round. If something is blue and not nice then it is red. If something is quiet then it is round. If Bob is red then Bob is blue. If something is rough and white then it is red. All nice, quiet things are red. All blue, rough things are round. If Dave is rough and Dave is not white then Dave is round. If something is not nice then it is red.
Dave is not quiet.