Question: who invented the structure of the classic pas de deux
[{'answer': 'Marius Petipa', 'provenance': [{'wikipedia_id': '776459', 'title': 'Pas de deux', 'start_paragraph_id': 15, 'start_character': 62, 'end_paragraph_id': 15, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '776459', 'title': 'Pas de deux', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 513, 'bleu_score': 0.977897140678983, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6182748304645530897}, 'section': 'Section::::History.\n'}]}]