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