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