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