Erin is green. Erin is young. Fiona is blue. Fiona is smart. Fiona is young. Harry is not big. Harry is green. Harry is nice. Harry is smart. Harry is not white. All young, nice people are blue. If Fiona is blue then Fiona is smart. All blue, green people are smart. If someone is not big then they are young. If someone is not big then they are nice. If someone is not big and not young then they are not green. If someone is white and not nice then they are not young. If someone is nice and not young then they are white.
Erin is nice.