Fiona is huge. Fiona is big. Gary is short. Gary is tiny. Harry is wealthy. Erin is dull. Erin is rough. If someone is not strong then they are dull. If someone is not bad then they are kind. If someone is wealthy then they are smart. If someone is smart and not sad then they are nice. If someone is dull and not strong then they are poor. All poor people are thin. If someone is short and tiny then they are sad. If someone is sad 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 clever. All nice people are experienced. 
Fiona is not thin.