Question: when did the constitution of india came into force
[{'answer': '26 January 1950', 'provenance': [{'wikipedia_id': '2198463', 'title': 'History of the Republic of India', 'start_paragraph_id': 1, 'start_character': 47, 'end_paragraph_id': 1, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2198463', 'title': 'History of the Republic of India', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 409, 'bleu_score': 0.9274581800092581, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15996452628878111463}, 'section': 'Section::::1947–1950: Dominion of India.:Constitution.\n'}]}]