Bob is young. Dave is rough. Dave is round. Fiona is not nice. Fiona is rough. Gary is blue. Gary is cold. Gary is quiet. Gary is round. Gary is young. If Fiona is blue then Fiona is rough. Cold things are quiet. Round, nice things are blue. If Fiona is not cold then Fiona is not quiet. If Bob is not round then Bob is rough. If something is round and not quiet then it is not blue.
Gary is not young.