national referendum
... that Sri Lanka's first and so far only national referendum was held in 1982 to postpone parliamentary elections by six years?
... that <a href="./Sri_Lanka" id="mwE8o" rel="mw:WikiLink" title="Sri Lanka">Sri Lanka</a>'s first and so far only <b id="mwE8s"><a class="mw-redirect" href="./Sri_Lankan_national_referendum,_1982" id="mwE8w" rel="mw:WikiLink" title="Sri Lankan national referendum, 1982">national referendum</a></b> was held in 1982 to postpone <a href="./Parliament_of_Sri_Lanka" id="mwE80" rel="mw:WikiLink" title="Parliament of Sri Lanka">parliamentary</a> elections by six years?