Question: who ordered to drop atomic bombs on hiroshima and nagasaki
[{'answer': 'American President Harry S. Truman', 'provenance': [{'wikipedia_id': '11778948', 'title': 'Atomic bombings of Hiroshima and Nagasaki', 'start_paragraph_id': 40, 'start_character': 206, 'end_paragraph_id': 40, 'end_character': 242, 'bleu_score': 0.668740304976422, 'section': 'Section::::Preparations.:Choice of targets.\n'}]}, {'provenance': [{'wikipedia_id': '11778948', 'title': 'Atomic bombings of Hiroshima and Nagasaki', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1141, 'bleu_score': 0.5756169627130421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 270013069370561618}, 'section': 'Section::::Abstract.'}]}]