Question: what was the united states first national capital
[{'answer': 'Washington , D.C.', 'provenance': [{'wikipedia_id': '31979', 'title': 'United States Capitol', 'start_paragraph_id': 46, 'start_character': 404, 'end_paragraph_id': 46, 'end_character': 423, 'bleu_score': 1.0, 'section': 'Section::::Interior.:Crypt.\n'}]}, {'provenance': [{'wikipedia_id': '31979', 'title': 'United States Capitol', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 747, 'bleu_score': 0.9705733906555171, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10818927609097256452}, 'section': 'Section::::History.:Background.\n'}]}]