Question: How many acts are in the opera based on an 1820 poem by Alexander Pushkinhave, in which Mariya Matveyevna Stepanova created the lead soprano role?
Sentence (from "Fête galante (Schierbeck)"): It was performed seven times at the Royal Theatre, Copenhagen 1931-32 with the composer's wife Sylvia Larsen in the main soprano role, but then not revived until 1960.
Relevant evidence: No