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