Question: what organization sets monetary policy for the united states
[{'answer': 'US Federal Reserve System', 'provenance': [{'wikipedia_id': '164391', 'title': 'Monetary policy of the United States', 'start_paragraph_id': 8, 'start_character': 63, 'end_paragraph_id': 8, 'end_character': 88, 'bleu_score': 1.0, 'section': 'Section::::Structure of modern US institutions.:Federal Reserve.\n'}]}, {'provenance': [{'wikipedia_id': '164391', 'title': 'Monetary policy of the United States', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 506, 'bleu_score': 0.9408228243926111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14975922461681214579}, 'section': 'Section::::Structure of modern US institutions.:Federal Reserve.\n'}]}]