[ capword - capword ( year ) ] sp capword sp capword - capword sp ( othword . ) . sp capword sp othword sp othword sp num othword sp capword sp upword capword sp othword sp capword sp capword sp capword sp othword sp capword , sp capword , sp capword , sp capword sp num - num , sp year ( upword , sp year ) . sp upword sp num - num - num - num .