Complex sentence: The opera, a dramma giocoso, is set in Tuscany, and was written for Adriana Ferrarese del Bene, the first Fiordiligi in Mozart's Così fan tutte.
Split into simpler sentences: The opera, a dramma giocoso, is set in Tuscany. It was written for Adriana Ferrarese del Bene, the first Fiordiligi in Mozart's Così fan tutte.