Bob is big. Bob is strong. Charlie is short. Charlie is small. Fiona is smart. Alan is rough. Alan is dull. If someone is not high then they are rough. If someone is not sad then they are quiet. If someone is smart then they are nice. If someone is nice and not bad then they are wealthy. If someone is rough and not high then they are poor. All poor people are thin. If someone is short and small then they are bad. If someone is bad and not nice then they are dull. If someone is dull then they are young. If someone is quiet then they are kind. All kind people are clever. All wealthy people are experienced. 
Alan is clever.