Dave is high. Dave is huge. Alan is little. Alan is small. Harry is quiet. Anne is dull. Anne is poor. If someone is not strong then they are dull. If someone is not sad then they are nice. If someone is quiet then they are wealthy. If someone is wealthy and not rough then they are smart. If someone is dull and not strong then they are bad. All bad people are thin. If someone is little and small then they are rough. If someone is rough and not wealthy then they are poor. If someone is poor then they are young. If someone is nice then they are clever. All clever people are kind. All smart people are experienced. 
Alan is not young.