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