Question: which level of u.s. government pays for the most healthcare
[{'answer': 'federal government', 'provenance': [{'wikipedia_id': '30964888', 'title': 'Expenditures in the United States federal budget', 'start_paragraph_id': 2, 'start_character': 19, 'end_paragraph_id': 2, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]