Question: who is the managing director of hdfc bank
[{'answer': 'Aditya Puri', 'provenance': [{'wikipedia_id': '41472380', 'title': 'Aditya Puri', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '41472380', 'title': 'Aditya Puri', 'start_paragraph_id': 1, 'start_character': 15, 'end_paragraph_id': 1, 'end_character': 341, 'bleu_score': 0.7801998330354131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12964249548283665122}, 'section': 'Section::::Abstract.'}]}]