Question: who did josh groban play in the great comet
[{'answer': 'Pierre', 'provenance': [{'wikipedia_id': '40618934', 'title': 'Natasha, Pierre & The Great Comet of 1812', 'start_paragraph_id': 0, 'start_character': 9, 'end_paragraph_id': 0, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40618934', 'title': 'Natasha, Pierre & The Great Comet of 1812', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 671, 'bleu_score': 0.9583546176158331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18110124846168099004}, 'section': 'Section::::Productions.:Broadway.:Imperial Theatre.\n'}]}]