Task: Text Categorization
Input (English): This opera was inspired by a play written by Carlo Gozzi, and it was completed after the composer's death by Franco Alfano. The plot of this opera is explained in its second act by the female lead, who sings "In questa reggia" [RAYJ-yah]. The protagonist of this opera is unsuccessfully urged to desist from risking his life in the aria "Signore [sin-YAWR-ay], ascolta", sung by his maid. That figure stabs herself to avoid further torture when she is brought into Altoum's court with Timur. This opera's most important aria, sung after the title character's three questions are correctly answered by Calaf, is "Nessun dorma". Name this opera by Giacomo Puccini [pooch-CHEE-nee] set in China.
Output (English): Literature