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