Complex sentence: Ravel's encouragement ultimately led to his winning the Prix Blumenthal (worth 20,000 francs) in 1928 He lobbied the directors of the Opéra-Comique to get Rosenthal's the one-act opera "Rayon des soieries" performed there in June 1930.
Split into simpler sentences: Ravel's encouragement ultimately led to his winning the Prix Blumenthal (worth 20,000 francs) in 1928. Ravel lobbied the directors of the Opéra-Comique to get Rosenthal's one-act opera "Rayon des soieries" performed there in June 1930.