Question: how long has the us had a national debt
[{'answer': '1789', 'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'start_paragraph_id': 9, 'start_character': 107, 'end_paragraph_id': 9, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'start_paragraph_id': 9, 'start_character': 26, 'end_paragraph_id': 9, 'end_character': 370, 'bleu_score': 0.633129272417116, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1931758124748759934}, 'section': 'Section::::History.\n'}]}]