Question: when did nagaland became a state of india
[{'answer': '1 December 1963', 'provenance': [{'wikipedia_id': '408677', 'title': 'Nagaland', 'start_paragraph_id': 4, 'start_character': 43, 'end_paragraph_id': 4, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '408677', 'title': 'Nagaland', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 390, 'bleu_score': 0.818725850592929, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 55549765363962722}, 'section': 'Section::::Abstract.'}]}]