Task: Text Categorization
Input (English): One of this composer's operas includes the song "Libiamo ne' lieti calici" [kah-LEE-chee], a duet sung   by Alfredo Germont and the woman he loves. That woman, who later sings "Addio, del passato", is  Violetta Valery. Another work by this composer, in which Abigaille becomes queen, features the song  "Va, pensiero", which is sometimes called "Chorus of the Hebrew Slaves." In another opera by this  composer, Amneris tells the man she loves to confess to treason. That man, Radames [rah-dah-mayss],  has in turn fallen in love with the title character, an Ethiopian princess. Name this composer of  Nabucco, La traviata, and Aida.
Output (English): Fine Arts