Question: where does the arkansas river flow into the mississippi
[{'answer': 'Napoleon , Arkansas', 'provenance': [{'wikipedia_id': '267577', 'title': 'Arkansas River', 'start_paragraph_id': 2, 'start_character': 456, 'end_paragraph_id': 2, 'end_character': 475, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '267577', 'title': 'Arkansas River', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 628, 'bleu_score': 0.8386707841074791, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10157226926868871671}, 'section': 'Section::::Abstract.'}]}]