Question: Caritea, regina di Spagna premiered at what opera house that in the 19th century, became the site of many famous operatic premieres at which the works of several of the four major bel canto era composers were performed?
Sentence (from "Caritea, regina di Spagna"): Caritea, regina di Spagna, ossia La morte di Don Alfonso re di Portogallo ("Caritea, Queen of Spain, or, The Death of Don Alfonso, King of Portugal"), is an opera in two acts by Saverio Mercadante, with a libretto by Paolo Pola.
Relevant evidence: No