Question: where does the arkansas river start in colorado
[{'answer': 'near Leadville', 'provenance': [{'wikipedia_id': '267577', 'title': 'Arkansas River', 'start_paragraph_id': 2, 'start_character': 248, 'end_paragraph_id': 2, 'end_character': 262, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '267577', 'title': 'Arkansas River', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 429, 'bleu_score': 0.970362113628587, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12974136095384900050}, 'section': 'Section::::Physical geography.:Hydrography.\n'}]}]