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