Bob is red. Charlie is rough. Charlie is young. Erin is quiet. Erin is red. Fiona is not furry. Fiona is quiet. If Charlie is red then Charlie is young. Young, furry people are not cold. All red people are smart. All rough people are quiet. All furry people are not red. If someone is smart and not cold then they are not young. If someone is not young then they are red. If someone is furry and not red then they are rough.
Fiona is young.