Question: where is the montane yukon arctic ultra held each year
[{'answer': 'beginning in Whitehorse , Yukon', 'provenance': [{'wikipedia_id': '30835587', 'title': 'Yukon Arctic Ultra', 'start_paragraph_id': 1, 'start_character': 91, 'end_paragraph_id': 1, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]