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