Dave is high. Dave is huge. Harry is small. Harry is short. Fiona is wealthy. Gary is poor. Gary is dull. If someone is not big then they are poor. If someone is not sad then they are smart. If someone is wealthy then they are clever. If someone is clever and not rough then they are quiet. If someone is poor and not big then they are bad. All bad people are thin. If someone is small and short then they are rough. If someone is rough 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 old. 
Dave is not thin.