Question: the river on which sardar sarovar dam is constructed
[{'answer': 'Narmada river', 'provenance': [{'wikipedia_id': '623549', 'title': 'Sardar Sarovar Dam', 'start_paragraph_id': 1, 'start_character': 47, 'end_paragraph_id': 1, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '623549', 'title': 'Sardar Sarovar Dam', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 525, 'bleu_score': 0.7797552834601911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10205825702586213047}, 'section': 'Section::::Abstract.'}]}]