Question: when was the first edinburgh military tattoo held
[{'answer': '1949', 'provenance': [{'wikipedia_id': '887696', 'title': 'Royal Edinburgh Military Tattoo', 'start_paragraph_id': 6, 'start_character': 105, 'end_paragraph_id': 6, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::History and etymology.:Origins.\n'}]}, {'provenance': [{'wikipedia_id': '887696', 'title': 'Royal Edinburgh Military Tattoo', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 559, 'bleu_score': 0.7473001330925231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14053730427686895840}, 'section': 'Section::::History and etymology.:Origins.\n'}]}]