paid tribute to the Armenian Genocide victims
... that over 20 heads of state have paid tribute to the Armenian Genocide victims?
... that over 20 heads of state have <b id="mwqQ"><a class="mw-redirect" href="./List_of_notable_visitors_to_Tsitsernakaberd" id="mwqg" rel="mw:WikiLink" title="List of notable visitors to Tsitsernakaberd">paid tribute to the Armenian Genocide victims</a></b>?