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