Question: how much of the u.s. national debt is owed to foreigners
[{'answer': '34 %', 'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'start_paragraph_id': 53, 'start_character': 126, 'end_paragraph_id': 53, 'end_character': 129, 'bleu_score': 1.0, 'section': 'Section::::Debt holdings.:Foreign holdings.\n'}]}]