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