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