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