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