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