Question: What aria is from a verismo opera in four acts by Umberto Giordano?
{'answer': '"La mamma morta " (They killed my mother) is an aria from act 3 of the 1896 opera "Andrea Chénier" by Umberto Giordano.', 'supporting_facts': [['La mamma morta', 0], ['Andrea Chénier', 0]]}