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