Question: Eleanora Ehrenberg stared in what opera that was first performed at the Provisional Theatre, Prague in 1866?
Sentence (from "Eleanora Ehrenbergů"): Eleanora Ehrenbergů (sometimes spelled Eleanora Ehrenbergová or Eleanora Ehrenberg) (1 November 1832 – 30 August 1912) was a Czech operatic soprano.
Relevant evidence: No