Question: when was the sound of music first performed
[{'answer': 'November 16 , 1959', 'provenance': [{'wikipedia_id': '30019', 'title': 'The Sound of Music', 'start_paragraph_id': 80, 'start_character': 242, 'end_paragraph_id': 80, 'end_character': 260, 'bleu_score': 1.0, 'section': 'Section::::Productions.:Original productions.\n'}]}, {'provenance': [{'wikipedia_id': '30019', 'title': 'The Sound of Music', 'start_paragraph_id': 80, 'start_character': 172, 'end_paragraph_id': 80, 'end_character': 1285, 'bleu_score': 0.9363194793316231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12750319379597634104}, 'section': 'Section::::Productions.:Original productions.\n'}]}]