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