Task: Explanation
Input (English): The Immortal Hour is an opera by English composer Rutland Boughton. Boughton adapted his own libretto from the works of Fiona MacLeod, a pseudonym of writer William Sharp. Question: Are both pieces The Immortal Hour and L'incoronazione di Poppea an opera? Answer: yes
Output (English): The Immortal Hour is an opera by English composer Rutland Boughton.