Question: secretary of state responsible for the successful negotiation of the washington naval treaty of 1922
[{'answer': 'Charles Evans Hughes', 'provenance': [{'wikipedia_id': '102231', 'title': 'Washington Naval Treaty', 'start_paragraph_id': 12, 'start_character': 75, 'end_paragraph_id': 12, 'end_character': 95, 'bleu_score': 1.0, 'section': 'Section::::Negotiations.\n'}]}, {'provenance': [{'wikipedia_id': '102231', 'title': 'Washington Naval Treaty', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 441, 'bleu_score': 0.930807147807393, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8514433888982804504}, 'section': 'Section::::Negotiations.\n'}]}]