Question: when was national development council established in india
[{'answer': '6 August 1952', 'provenance': [{'wikipedia_id': '32700923', 'title': 'National Development Council (India)', 'start_paragraph_id': 1, 'start_character': 211, 'end_paragraph_id': 1, 'end_character': 224, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32700923', 'title': 'National Development Council (India)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 648, 'bleu_score': 0.9812185674664711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9745095940271007313}, 'section': 'Section::::Abstract.'}]}]