Charlie is blue. Erin is not blue. Fiona is big. Harry is red. If someone is red and not blue then they are not big. If someone is nice and not blue then they are not rough. Big, rough people are green. If Charlie is blue then Charlie is not nice. If Erin is young and Erin is not nice then Erin is big. Blue, young people are not nice. If someone is rough and not blue then they are big. If someone is not nice and not young then they are not green.
Erin is not young.