Alan is strong. Alan is high. Bob is tiny. Bob is small. Dave is nice. Harry is rough. Harry is dull. If someone is not big then they are rough. If someone is not sad then they are smart. If someone is nice then they are quiet. If someone is quiet and not poor then they are clever. If someone is rough and not big then they are bad. All bad people are short. If someone is tiny and small then they are poor. If someone is poor and not quiet then they are dull. If someone is dull then they are young. If someone is smart then they are wealthy. All wealthy people are kind. All clever people are experienced. 
Dave is experienced.