Question: when was national flag of india first displayed
[{'answer': '15 August 1947', 'provenance': [{'wikipedia_id': '978203', 'title': 'Flag of India', 'start_paragraph_id': 1, 'start_character': 326, 'end_paragraph_id': 1, 'end_character': 340, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '978203', 'title': 'Flag of India', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 525, 'bleu_score': 0.9792717993254391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6371644134554542662}, 'section': 'Section::::History.\n'}]}]