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