Question: where is the headquarters of world bank situated
[{'answer': 'Washington , D.C. , U.S.', 'provenance': [{'wikipedia_id': '45358446', 'title': 'World Bank', 'start_paragraph_id': 11, 'start_character': 220, 'end_paragraph_id': 11, 'end_character': 240, 'bleu_score': 0.668740304976422, 'section': 'Section::::History.\n'}]}]