Question: who made the first helicopter in the world
[{'answer': 'Paul Cornu', 'provenance': [{'wikipedia_id': '8286923', 'title': 'Helicopter', 'start_paragraph_id': 15, 'start_character': 39, 'end_paragraph_id': 15, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::History.:First flights.\n'}]}, {'provenance': [{'wikipedia_id': '8286923', 'title': 'Helicopter', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 506, 'bleu_score': 0.761231035989926, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4892215593073197793}, 'section': 'Section::::History.:First flights.\n'}]}]