Fiona is big. Fiona is high. Harry is small. Harry is thin. Gary is wealthy. Alan is rough. Alan is poor. If someone is not huge then they are rough. If someone is not sad then they are quiet. If someone is wealthy then they are kind. If someone is kind and not bad then they are nice. If someone is rough and not huge then they are dull. If someone is small and thin then they are bad. If someone is bad and not kind then they are poor. All quiet people are smart. 
Alan is not smart.