Question: who was president when the atomic bombs were dropped
[{'answer': 'Truman', 'provenance': [{'wikipedia_id': '11778948', 'title': 'Atomic bombings of Hiroshima and Nagasaki', 'start_paragraph_id': 40, 'start_character': 236, 'end_paragraph_id': 40, 'end_character': 242, 'bleu_score': 1.0, 'section': 'Section::::Preparations.:Choice of targets.\n'}]}, {'provenance': [{'wikipedia_id': '11778948', 'title': 'Atomic bombings of Hiroshima and Nagasaki', 'start_paragraph_id': 111, 'start_character': 54, 'end_paragraph_id': 111, 'end_character': 926, 'bleu_score': 0.894955417594899, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13244021636374870026}, 'section': 'Section::::Plans for more atomic attacks on Japan.\n'}]}]