Question: who led the revolution in bihar in 1857 ce
[{'answer': 'Kunwar Singh', 'provenance': [{'wikipedia_id': '590246', 'title': 'Indian Rebellion of 1857', 'start_paragraph_id': 100, 'start_character': 31, 'end_paragraph_id': 100, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::The Revolt.:Bihar.\n'}]}, {'provenance': [{'wikipedia_id': '590246', 'title': 'Indian Rebellion of 1857', 'start_paragraph_id': 100, 'start_character': 27, 'end_paragraph_id': 100, 'end_character': 223, 'bleu_score': 0.8283995163558051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10404567631841266463}, 'section': 'Section::::The Revolt.:Bihar.\n'}]}]