Which of the following operas is composed of five acts: Anna Bolena or Mireille?
Mireille
Title: Mireille (opera)
Passage: Mireille is an 1864 opera in five acts by Charles Gounod to a French libretto by Michel Carré after Frédéric Mistral's poem "Mireio".  The vocal score is dedicated to George V of Hanover.
Title: Anna Bolena
Passage: Anna Bolena is a tragic opera ("tragedia lirica") in two acts composed by Gaetano Donizetti.  Felice Romani wrote the Italian libretto after Ippolito Pindemonte's "Enrico VIII ossia Anna Bolena" and Alessandro Pepoli's "Anna Bolena", both recounting the life of Anne Boleyn, the second wife of England's King Henry VIII.
Title: Bob: A Life in Five Acts
Passage: Bob: A Life in Five Acts is a play written by actor and playwright Peter Sinn Nachtrieb.  The play was the winner of the 2010 Barrie and Bernice Stavis Award from the National Theatre Conference.  It follows the life and adventures of Bob, a man certain of his destiny for greatness, as he struggles to find his purpose.  Divided into five acts, each section of the play corresponds with a period in Bob’s life.  In 2012, it was published by Dramatists Play Service, Inc.
Anna Bolena Mireille (opera)