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