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