Question: Which play was adapted by Vladimir Zotov  Iolanta or Die Meistersinger von Nürnberg?
Sentence (from "Iolanta"): The libretto was written by the composer's brother Modest Tchaikovsky, and is based on the Danish play "Kong Renés Datter " ("King René's Daughter") by Henrik Hertz, a romanticised account of the life of Yolande de Bar.
Relevant evidence: No