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