Dave is furry. Dave is rough. Erin is green. Erin is quiet. Erin is not white. Fiona is furry. Fiona is kind. Fiona is rough. Fiona is white. Gary is not furry. Gary is white. All white, furry people are quiet. If Dave is furry then Dave is white. If someone is white and rough then they are quiet. All rough, quiet people are green. White, quiet people are furry. All kind, rough people are round. All green people are kind. If Erin is not furry then Erin is not white.
Fiona is furry.