Question: when was india capital shifted from calcutta to delhi
[{'answer': '12 December 1911', 'provenance': [{'wikipedia_id': '51585', 'title': 'New Delhi', 'start_paragraph_id': 8, 'start_character': 27, 'end_paragraph_id': 8, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::History.:Establishment.\n'}]}, {'provenance': [{'wikipedia_id': '51585', 'title': 'New Delhi', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 871, 'bleu_score': 0.725675643112475, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2285366357995662259}, 'section': 'Section::::History.:Establishment.\n'}]}]