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