Question: who owns the majority of the us debt
[{'answer': 'China', 'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'start_paragraph_id': 52, 'start_character': 249, 'end_paragraph_id': 52, 'end_character': 254, 'bleu_score': 1.0, 'section': 'Section::::Debt holdings.:Foreign holdings.\n'}]}, {'answer': 'Japan', 'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'start_paragraph_id': 52, 'start_character': 273, 'end_paragraph_id': 52, 'end_character': 278, 'bleu_score': 1.0, 'section': 'Section::::Debt holdings.:Foreign holdings.\n'}]}, {'answer': 'the public', 'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'start_paragraph_id': 6, 'start_character': 284, 'end_paragraph_id': 6, 'end_character': 294, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Japan and China'}, {'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17530924396164311195}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'section': 'Section::::Abstract.', 'start_paragraph_id': 6, 'end_paragraph_id': 6, 'meta': {'evidence_span': ['Historically, the US public debt as a share of gross domestic product (GDP) has increased during wars and recessions, and subsequently declined.', "Historically, the US public debt as a share of gross domestic product (GDP) has increased during wars and recessions, and subsequently declined. The ratio of debt to GDP may decrease as a result of a government surplus or due to growth of GDP and inflation. For example, debt held by the public as a share of GDP peaked just after World War II (113% of GDP in 1945), but then fell over the following 35 years. In recent decades, aging demographics and rising healthcare costs have led to concern about the long-term sustainability of the federal government's fiscal policies. The aggregate, gross amount that Treasury can borrow is limited by the United States debt ceiling."]}}]}, {'provenance': [{'wikipedia_id': '322221', 'title': 'National debt of the United States', 'section': 'Section::::Debt holdings.:Foreign holdings.\n', 'start_paragraph_id': 52, 'start_character': 0, 'end_paragraph_id': 52, 'end_character': 337, 'bleu_score': 0.8920035746243621}]}]