[ num ] sp capword sp caplet . sp capword sp othword sp othword sp othword sp upword sp othword sp othword sp othword sp othword . sp upword : capword sp capword sp capword sp ( capword sp othword sp capword ) ; sp year . sp capword sp othword : sp othword : / / othword . othword . othword . othword . othword / othword / othword / othword / othword . othword .