Bob is blue. Bob is not kind. Charlie is blue. Charlie is not nice. Charlie is not rough. Charlie is not round. Charlie is young. Dave is blue. Dave is rough. Gary is blue. Gary is kind. Gary is nice. Gary is round. Gary is white. Gary is young. If Gary is rough and Gary is white then Gary is blue. If something is nice and not young then it is not rough. If something is not kind and not blue then it is round.
Dave is not round.