Question: Which Opera has more acts Il ritorno d'Ulisse in patria or Die Walküre ?
Sentence (from "Lost operas by Claudio Monteverdi"): His theatrical works were written between 1604 and 1643 and included ten operas, of which three—"L'Orfeo" (1607), "Il ritorno d'Ulisse in patria" (1640) and "L'incoronazione di Poppea" (1643)—have survived with their music and librettos intact.
Relevant evidence: No