Question: who was the pilot of the nagasaki bombing
[{'answer': 'Charles W. Sweeney', 'provenance': [{'wikipedia_id': '839581', 'title': 'Charles Sweeney', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '839581', 'title': 'Charles Sweeney', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 492, 'bleu_score': 0.9483044717870771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5458426008353453601}, 'section': 'Section::::Abstract.'}]}]