Rose and Ottilie Sutro
... that the American sisters Rose and Ottilie Sutro were the world's first duo-piano team?
... that the <a href="./United_States" id="mwDBo" rel="mw:WikiLink" title="United States">American</a> sisters <b id="mwDBs"><a href="./Rose_and_Ottilie_Sutro" id="mwDBw" rel="mw:WikiLink" title="Rose and Ottilie Sutro">Rose and Ottilie Sutro</a></b> were the world's first <a class="mw-redirect" href="./Duet_(music)" id="mwDB0" rel="mw:WikiLink" title="Duet (music)">duo</a>-<a href="./Piano" id="mwDB4" rel="mw:WikiLink" title="Piano">piano</a> team?