Bob is rough. Bob is round. Bob is smart. Bob is young. Charlie is blue. Charlie is furry. Charlie is rough. Fiona is red. Fiona is smart. Gary is rough. If Bob is young and Bob is round then Bob is rough. All furry, round people are rough. Rough, furry people are round. All red people are round. If someone is round and blue then they are red. All red people are furry.
Charlie is not blue.