Studion
...that three Byzantine emperors ended their lives as monks of the Studion, the largest monastery of Constantinople?
...that three <a href="./Byzantine_Empire" id="mwFA" rel="mw:WikiLink" title="Byzantine Empire">Byzantine</a> emperors ended their lives as monks of the <b id="mwFQ"><a class="mw-redirect" href="./Studion" id="mwFg" rel="mw:WikiLink" title="Studion">Studion</a></b>, the largest <a href="./Monastery" id="mwFw" rel="mw:WikiLink" title="Monastery">monastery</a> of <a href="./Constantinople" id="mwGA" rel="mw:WikiLink" title="Constantinople">Constantinople</a>?