Question: what body of water does the missouri river empty into
[{'answer': 'Mississippi River', 'provenance': [{'wikipedia_id': '19591', 'title': 'Missouri River', 'start_paragraph_id': 1, 'start_character': 166, 'end_paragraph_id': 1, 'end_character': 183, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19591', 'title': 'Missouri River', 'start_paragraph_id': 1, 'start_character': 13, 'end_paragraph_id': 1, 'end_character': 646, 'bleu_score': 0.6485855978041271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7221342029212926174}, 'section': 'Section::::Abstract.'}]}]