Question: the annual canadian challenge sled dog race takes place in what province
[{'answer': 'Saskatchewan', 'provenance': [{'wikipedia_id': '22883460', 'title': 'List of sled dog races', 'start_paragraph_id': 42, 'start_character': 180, 'end_paragraph_id': 42, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::Mid-distance races.\n'}]}, {'provenance': [{'wikipedia_id': '22883460', 'title': 'List of sled dog races', 'start_paragraph_id': 42, 'start_character': 0, 'end_paragraph_id': 42, 'end_character': 218, 'bleu_score': 0.9383861709333501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12145442303287995726}, 'section': 'Section::::Mid-distance races.\n'}]}]