Alan is high. Alan is strong. Fiona is short. Fiona is small. Harry is wealthy. Dave is rough. Dave is bad. If someone is not huge then they are rough. If someone is not dull then they are smart. If someone is wealthy then they are nice. If someone is nice and not poor then they are kind. If someone is rough and not huge then they are sad. If someone is short and small then they are poor. If someone is poor and not nice then they are bad. All smart people are quiet. 
Alan is not sad.