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