Question: what is the source of the colorado river
[{'answer': 'La Poudre Pass', 'provenance': [{'wikipedia_id': '180968', 'title': 'Colorado River', 'start_paragraph_id': 8, 'start_character': 23, 'end_paragraph_id': 8, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Course.\n'}]}]