Does Werther or War and Peace have more acts?
Werther Werther is an opera ("drame lyrique") in four acts by Jules Massenet to a French libretto by Édouard Blau, Paul Milliet and Georges Hartmann (who used the pseudonym Henri Grémont). It is loosely based on the German epistolary novel "The Sorrows of Young Werther" by Johann Wolfgang von Goethe, which was based both on fact and on Goethe's own early life. Earlier examples of operas using the story were made by Kreutzer (1792) and Pucitta (1802).
Yaroslav Mudriy Yaroslav Mudriy (English: "Yaroslav the Wise") is an opera in eight scenes, comprised in three acts, by the Ukrainian composer Heorhiy Maiboroda, written in 1973 and premiered in 1975. The composer himself adapted the libretto from a dramatic poem by Ivan Kocherga.