Question: who was the first chief executive officer of niti ayog
[{'answer': 'Amitabh Kant', 'provenance': [{'wikipedia_id': '44986807', 'title': 'NITI Aayog', 'start_paragraph_id': 38, 'start_character': 43, 'end_paragraph_id': 38, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::Members.\n'}]}, {'provenance': [{'wikipedia_id': '44986807', 'title': 'NITI Aayog', 'start_paragraph_id': 38, 'start_character': 0, 'end_paragraph_id': 38, 'end_character': 55, 'bleu_score': 0.6803749333171201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11202258110614272593}, 'section': 'Section::::Members.\n'}]}]