Do both Simon Boccanegra and Le roi d'Ys have the same number of acts?
Le roi d'Ys Le roi d'Ys ("The King of Ys") is an opera in three acts and five tableaux by the French composer Édouard Lalo, to a libretto by Édouard Blau, based on the old Breton legend of the drowned city of Ys. That city was, according to the legend, the capital of the kingdom of Cornouaille.
Acta Sanctorum Acta Sanctorum ("Acts of the Saints") is an encyclopedic text in 68 folio volumes of documents examining the lives of Christian saints, in essence a critical hagiography, which is organised according to each saint's feast day. The project was conceived and begun by Jesuit Heribert Rosweyde. After his death in 1629, the Jesuit scholar Jean Bolland ('Bollandus', 1596–1665) continued the work, which was gradually finished over the centuries by the Bollandists, who continue to edit and publish the "Acta Sanctorum".