Question: who won the contest to design the capitol building
[{'answer': 'William Thornton', 'provenance': [{'wikipedia_id': '31979', 'title': 'United States Capitol', 'start_paragraph_id': 14, 'start_character': 34, 'end_paragraph_id': 14, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::History.:Design competition.\n'}]}, {'provenance': [{'wikipedia_id': '31979', 'title': 'United States Capitol', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 1348, 'bleu_score': 0.9908464411502881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4802161981083839784}, 'section': 'Section::::History.:Design competition.\n'}]}]