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