Gary is big. Gary is strong. Dave is thin. Dave is little. Alan is kind. Charlie is dull. Charlie is poor. If someone is not high then they are dull. If someone is not rough then they are quiet. If someone is kind then they are wealthy. If someone is wealthy and not bad then they are nice. If someone is dull and not high then they are sad. If someone is thin and little then they are bad. If someone is bad and not wealthy then they are poor. All quiet people are smart. 
Charlie is smart.