Prison of Anemas
... that four Byzantine emperors were imprisoned in the Prison of Anemas?
... that four <a class="mw-redirect" href="./Byzantine_emperors" id="mwC-Q" rel="mw:WikiLink" title="Byzantine emperors">Byzantine emperors</a> were imprisoned in the <b id="mwC-U"><a href="./Prison_of_Anemas" id="mwC-Y" rel="mw:WikiLink" title="Prison of Anemas">Prison of Anemas</a></b>?