Question: who has been appointed as the new governor of usa central bank federal reserve
[{'answer': 'Jerome Powell', 'provenance': [{'wikipedia_id': '392350', 'title': 'Chair of the Federal Reserve', 'start_paragraph_id': 3, 'start_character': 24, 'end_paragraph_id': 3, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]