Bob is not big. Bob is not blue. Bob is not green. Bob is nice. Bob is quiet. Bob is rough. Dave is big. Dave is quiet. Dave is not rough. Fiona is big. Fiona is not green. Fiona is nice. Fiona is quiet. Fiona is rough. Gary is nice. Gary is quiet. If Dave is green and Dave is not round then Dave is not rough. If someone is blue and not big then they are quiet. If someone is big and quiet then they are nice. If someone is not nice then they are quiet. If Fiona is rough and Fiona is not nice then Fiona is not green. If someone is not quiet then they are not round.
Gary is quiet.