Question: when was the capital of india transferred from calcutta to delhi
[{'answer': 'December 1911', 'provenance': [{'wikipedia_id': '51585', 'title': 'New Delhi', 'start_paragraph_id': 6, 'start_character': 78, 'end_paragraph_id': 6, 'end_character': 91, 'bleu_score': 1.0, 'section': 'Section::::History.:Establishment.\n'}]}, {'provenance': [{'wikipedia_id': '51585', 'title': 'New Delhi', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 91, 'bleu_score': 0.8702397637697911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 71953896499145537}, 'section': 'Section::::History.:Establishment.\n'}]}]