Question: who started the school of american ballet and the new york city ballet
[{'answer': 'George Balanchine', 'provenance': [{'wikipedia_id': '1561551', 'title': 'School of American Ballet', 'start_paragraph_id': 3, 'start_character': 73, 'end_paragraph_id': 3, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': 'Lincoln Kirstein', 'provenance': [{'wikipedia_id': '1561551', 'title': 'School of American Ballet', 'start_paragraph_id': 3, 'start_character': 112, 'end_paragraph_id': 3, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': 'Edward Warburg', 'provenance': [{'wikipedia_id': '1561551', 'title': 'School of American Ballet', 'start_paragraph_id': 3, 'start_character': 133, 'end_paragraph_id': 3, 'end_character': 147, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '1561551', 'title': 'School of American Ballet', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1209, 'bleu_score': 0.9895009487746611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2034538731406425082}, 'section': 'Section::::History.\n'}]}]