Charlie is furry. Charlie is rough. Dave is big. Fiona is quiet. Gary is rough. Gary is round. Gary is white. All big, furry things are rough. All white, blue things are round. All rough, quiet things are blue. Big things are rough. All big things are quiet. If Charlie is white and Charlie is round then Charlie is rough. If something is rough then it is white. White things are big.
Fiona is not white.