Question: who is the first indian president to die in office
[{'answer': 'Zakir Husain', 'provenance': [{'wikipedia_id': '290769', 'title': 'List of presidents of India', 'start_paragraph_id': 3, 'start_character': 331, 'end_paragraph_id': 3, 'end_character': 343, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '290769', 'title': 'List of presidents of India', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 596, 'bleu_score': 0.9804854598160591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15615978950768342180}, 'section': 'Section::::Abstract.'}]}]