Question: who owns the white house in washington dc
[{'answer': 'National Park Service', 'provenance': [{'wikipedia_id': '33057', 'title': 'White House', 'start_paragraph_id': 4, 'start_character': 470, 'end_paragraph_id': 4, 'end_character': 491, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33057', 'title': 'White House', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 639, 'bleu_score': 0.9813933169956551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4373645234894120431}, 'section': 'Section::::Abstract.'}]}]