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