Bob is rough. Charlie is furry. Charlie is quiet. Charlie is round. Dave is blue. Dave is furry. Dave is green. Dave is quiet. Dave is smart. Gary is rough. Gary is round. Gary is smart. If Dave is green then Dave is smart. If someone is rough then they are blue. If Charlie is blue then Charlie is rough. Rough, furry people are round. If someone is rough and green then they are quiet. Smart, green people are furry. All quiet, furry people are round. If someone is rough then they are green. All green, quiet people are smart.
Gary is not quiet.