Question: The first movement of the most vast and dramatic of Dimitry Kabalevsky's three sonatas has been compared to a symphony that was dedicated by is composer to what city?
{'answer': 'Leningrad', 'supporting_facts': [['Piano Sonata No. 2 (Kabalevsky)', 0], ['Piano Sonata No. 2 (Kabalevsky)', 1], ['Piano Sonata No. 2 (Kabalevsky)', 2], ['Symphony No. 7 (Shostakovich)', 0], ['Symphony No. 7 (Shostakovich)', 1]]}