Gary is strong. Gary is huge. Dave is small. Dave is thin. Bob is kind. Erin is poor. Erin is rough. If someone is not high then they are poor. If someone is not bad then they are clever. If someone is kind then they are quiet. If someone is quiet and not dull then they are nice. If someone is poor and not high then they are sad. All sad people are tiny. If someone is small and thin then they are dull. If someone is dull and not quiet then they are rough. If someone is rough then they are young. If someone is clever then they are smart. All smart people are wealthy. All nice people are old. 
Dave is young.