Question: Hermine Kittel (December 2, 1879 – April 7, 1948) was an Austrian contralto from Vienna, she later premiered in a revision of "Ariadne auf Naxos", an opera by Richard Strauss, with a German libretto by who?
{'answer': 'Hugo von Hofmannsthal', 'supporting_facts': [['Hermine Kittel', 3], ['Ariadne auf Naxos', 1]]}