Charlie is furry. Charlie is green. Charlie is round. Charlie is smart. Dave is furry. Dave is not green. Dave is nice. Dave is not quiet. Dave is round. Dave is smart. Dave is white. Gary is green. Gary is nice. Gary is quiet. Gary is smart. If something is quiet and not green then it is not smart. If something is quiet and nice then it is not round. Furry things are white. If something is not round then it is quiet. If Gary is not quiet then Gary is smart. If Charlie is furry and Charlie is not white then Charlie is not nice.
Gary is not quiet.