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