Dave is nice. Fiona is rough. Gary is cold. Harry is young. If someone is not nice and not cold then they are young. If Dave is nice and Dave is red then Dave is rough. All rough people are quiet. If someone is smart then they are red. If someone is nice then they are smart. If Dave is young and Dave is not smart then Dave is quiet. If someone is not red then they are quiet. If Dave is cold and Dave is not quiet then Dave is young.
Harry is young.