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