Question: Joseph Kaiser performed in an opera in five acts known as what?
Sentence (from "Roméo et Juliette"): Roméo et Juliette ("Romeo and Juliet") is an opera in five acts by Charles Gounod to a French libretto by Jules Barbier and Michel Carré, based on "The Tragedy of Romeo and Juliet" by William Shakespeare.
Relevant evidence: Yes