triptychs
... that Irish-born artist Francis Bacon painted 28 known triptychs between 1944 and 1984?
... that Irish-born artist <a class="mw-redirect" href="./Francis_Bacon_(painter)" id="mwBk0" rel="mw:WikiLink" title="Francis Bacon (painter)">Francis Bacon</a> painted 28 known <b id="mwBk4"><a class="mw-redirect" href="./The_triptychs_of_Francis_Bacon" id="mwBk8" rel="mw:WikiLink" title="The triptychs of Francis Bacon">triptychs</a></b> between 1944 and 1984?