Question: vani vilasa sagara dam popularly known as mari kanive is over which river
[{'answer': 'Vedavathi', 'provenance': [{'wikipedia_id': '963876', 'title': 'Vani Vilasa Sagara', 'start_paragraph_id': 2, 'start_character': 87, 'end_paragraph_id': 2, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]