undefeated
... that The Undertaker was undefeated at WrestleMania from 1991 to 2013?
... that <a href="./The_Undertaker" id="mwAqA" rel="mw:WikiLink" title="The Undertaker">The Undertaker</a> was <b id="mwAqE"><a class="mw-redirect" href="./Undefeated_WrestleMania_streak_of_The_Undertaker" id="mwAqI" rel="mw:WikiLink" title="Undefeated WrestleMania streak of The Undertaker">undefeated</a></b> at <a href="./WrestleMania" id="mwAqM" rel="mw:WikiLink" title="WrestleMania">WrestleMania</a> from 1991 to 2013?