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