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