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