Question: Which of these two act operas, Lucrezia Borgia or Il pirata, was based on a three-act melodrame? 
Sentence (from "Il pirata"): However, this play was itself based upon a French translation of the "five-act verse tragedy" "Bertram, or The Castle of St Aldobrando" by Charles Maturin which appeared in London in 1816.
Relevant evidence: No