Anne is not rough. Erin is not white. Fiona is smart. All round, smart things are rough. Smart things are furry. Round, furry things are quiet. If Erin is furry and Erin is rough then Erin is round. Smart things are round. If something is smart and not quiet then it is not round. If something is round and not rough then it is white. If Anne is rough and Anne is not furry then Anne is not white.
Fiona is furry.