Question: What nationality is Isolde Beidler's father?
Sentence (from "Jean-Claude Auvray"): In 1973 he was appointed by Rolf Libermann to direct the Paris Opera in their productions of Puccini's" Tosca"( Puccini) and Mozart's" Così fan tutteLe Nozze di Figaro" was acclaimed in 1974.
Relevant evidence: No