Question: where does the meramec river start and end
[{'answer': 'headwaters near Salem', 'provenance': [{'wikipedia_id': '339245', 'title': 'Meramec River', 'start_paragraph_id': 1, 'start_character': 160, 'end_paragraph_id': 1, 'end_character': 181, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'empties into the Mississippi River near St. Louis at Arnold and Oakville'}, {'provenance': [{'wikipedia_id': '339245', 'title': 'Meramec River', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 489, 'bleu_score': 0.5566078226944531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 485134678720909630}, 'section': 'Section::::Abstract.'}]}]