Question: where did the sepoys break out in open revolt on may 10 1857
[{'answer': 'Meerut', 'provenance': [{'wikipedia_id': '590246', 'title': 'Indian Rebellion of 1857', 'start_paragraph_id': 1, 'start_character': 337, 'end_paragraph_id': 1, 'end_character': 343, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '590246', 'title': 'Indian Rebellion of 1857', 'start_paragraph_id': 1, 'start_character': 220, 'end_paragraph_id': 1, 'end_character': 890, 'bleu_score': 0.9532022629649811, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5372540603099196825}, 'section': 'Section::::Abstract.'}]}]