Erin is strong. Erin is high. Charlie is little. Charlie is tiny. Harry is quiet. Gary is dull. Gary is sad. If someone is not huge then they are dull. If someone is not bad then they are clever. If someone is quiet then they are nice. If someone is nice and not rough then they are kind. If someone is dull and not huge then they are poor. All poor people are thin. If someone is little and tiny then they are rough. If someone is rough and not nice then they are sad. If someone is sad then they are young. If someone is clever then they are wealthy. All wealthy people are smart. All kind people are old. 
Erin is not thin.