Question: Of "Porgy and Bess" and "Norma", which was produced first?
Sentence (from "Norma (opera)"): Norma (] ) is a "tragedia lirica" or opera in two acts by Vincenzo Bellini with libretto by Felice Romani after "Norma, ou L'infanticide" ("Norma, or The Infanticide") by Alexandre Soumet.
Relevant evidence: Yes