Question: who is appointed as nagaland chief minister recently
[{'answer': 'Neiphiu Rio', 'provenance': [{'wikipedia_id': '2382913', 'title': 'List of chief ministers of Nagaland', 'start_paragraph_id': 2, 'start_character': 231, 'end_paragraph_id': 2, 'end_character': 242, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]