Ann Childe Seguin
... that the first American grand opera was written for soprano Ann Childe Seguin?
... that the first American <a href="./Grand_opera" id="mwA_w" rel="mw:WikiLink" title="Grand opera">grand opera</a> was written for soprano <b id="mwA_0"><a href="./Ann_Childe_Seguin" id="mwA_4" rel="mw:WikiLink" title="Ann Childe Seguin">Ann Childe Seguin</a></b>?