Question: where does the us ambassador live in london
[{'answer': 'Winfield House', 'provenance': [{'wikipedia_id': '1486077', 'title': 'Winfield House', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1486077', 'title': 'Winfield House', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 460, 'bleu_score': 0.618976520202807, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4099289509569169596}, 'section': 'Section::::Abstract.'}]}]