Question: who spends the most money on their military in the world
[{'answer': 'United States', 'provenance': [{'wikipedia_id': '2700668', 'title': 'List of countries by military expenditures', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 142, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]