Question: What is a five-act musical mystery play on the subject of Saint Sebastian, with a text written in 1911 by the Italian author who occupied a prominent place in Italian literature from 1889 to 1910 ?
Sentence (from "Gabriele D'Annunzio"): He was often referred to under the epithets "Il Vate" ("the Poet") or "Il Profeta" ("the Prophet").
Relevant evidence: No