Question: where does the snake river begin and end
[{'answer': 'western Wyoming', 'provenance': [{'wikipedia_id': '27982', 'title': 'Snake River', 'start_paragraph_id': 1, 'start_character': 258, 'end_paragraph_id': 1, 'end_character': 273, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Columbia River', 'provenance': [{'wikipedia_id': '27982', 'title': 'Snake River', 'start_paragraph_id': 1, 'start_character': 139, 'end_paragraph_id': 1, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]