Dave is white. Erin is not white. Fiona is nice. Harry is big. All big, nice things are white. If something is big then it is green. If something is nice and round then it is not furry. If something is young and not round then it is white. Big, green things are young. Round, furry things are nice. Big things are green. If something is young and not green then it is nice.
Harry is not white.