[ num ] sp capword sp upword . sp capword sp othword sp othword sp othword sp othword sp othword sp othword sp othword othword sp othword sp [ capword ] . sp upword : sp capword sp othword sp capword sp capword , sp capword sp capword capword ; sp year . sp capword sp othword : sp othword : / / othword . othword . othword . othword / num / num / num . othword .