the fourth season
... that the final episode of the fourth season of Star Trek: Enterprise ended eighteen years of Star Trek on television?
... that the <a href="./These_Are_the_Voyages..." id="mwCQc" rel="mw:WikiLink" title="These Are the Voyages...">final episode</a> of <b id="mwCQg"><a href="./Star_Trek:_Enterprise_(season_4)" id="mwCQk" rel="mw:WikiLink" title="Star Trek: Enterprise (season 4)">the fourth season</a></b> of <i id="mwCQo"><a href="./Star_Trek:_Enterprise" id="mwCQs" rel="mw:WikiLink" title="Star Trek: Enterprise">Star Trek: Enterprise</a></i> ended eighteen years of <i id="mwCQw"><a href="./Star_Trek" id="mwCQ0" rel="mw:WikiLink" title="Star Trek">Star Trek</a></i> on television?