Dave is high. Dave is big. Fiona is small. Fiona is short. Gary is kind. Erin is rough. Erin is bad. If someone is not strong then they are rough. If someone is not sad then they are wealthy. If someone is kind then they are clever. If someone is clever and not dull then they are quiet. If someone is rough and not strong then they are poor. All poor people are thin. If someone is small and short then they are dull. If someone is dull and not clever then they are bad. If someone is bad then they are young. If someone is wealthy then they are smart. All smart people are nice. All quiet people are experienced. 
Dave is not thin.