Question: who was known for having a sign on his desk that read the buck stops here
[{'answer': 'Harry S. Truman', 'provenance': [{'wikipedia_id': '3221453', 'title': 'Buck passing', 'start_paragraph_id': 8, 'start_character': 73, 'end_paragraph_id': 8, 'end_character': 88, 'bleu_score': 1.0, 'section': 'Section::::"The buck stops here".\n'}]}, {'provenance': [{'wikipedia_id': '3221453', 'title': 'Buck passing', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 459, 'bleu_score': 0.954278069844353, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2710902148485295108}, 'section': 'Section::::"The buck stops here".\n'}]}]