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