Question: what is the river that runs through nashville tn
[{'answer': 'Cumberland River', 'provenance': [{'wikipedia_id': '562687', 'title': 'Cumberland River', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '562687', 'title': 'Cumberland River', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 326, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9410690194433569229}, 'section': 'Section::::Abstract.'}]}]