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