Bob is big. Bob is high. Charlie is short. Charlie is little. Anne is quiet. Alan is dull. Alan is poor. If someone is not huge then they are dull. If someone is not rough then they are nice. If someone is quiet then they are kind. If someone is kind and not sad then they are wealthy. If someone is dull and not huge then they are bad. If someone is short and little then they are sad. If someone is sad and not kind then they are poor. All nice people are smart. 
Alan is smart.