Question: when was the indian national anthem first sung
[{'answer': '27 December 1911', 'provenance': [{'wikipedia_id': '56280', 'title': 'Jana Gana Mana', 'start_paragraph_id': 1, 'start_character': 525, 'end_paragraph_id': 1, 'end_character': 541, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56280', 'title': 'Jana Gana Mana', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 611, 'bleu_score': 0.7746631221184891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15238391133330849653}, 'section': 'Section::::Abstract.'}]}]