Question: where is the office of the comptroller of the currency located
[{'answer': 'Washington , D.C.', 'provenance': [{'wikipedia_id': '1184385', 'title': 'Office of the Comptroller of the Currency', 'start_paragraph_id': 3, 'start_character': 17, 'end_paragraph_id': 3, 'end_character': 34, 'bleu_score': 1.0, 'section': 'Section::::Duties and functions.\n'}]}]