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