Question: The Russian composer of an 1893 symphony in E flat major had a student during the early Soviet years, what was the best known student's name?
{'answer': 'Dmitri Shostakovich', 'supporting_facts': [['Symphony No. 4 (Glazunov)', 0], ['Symphony No. 4 (Glazunov)', 1], ['Alexander Glazunov', 3]]}