Question: who won season 21 of the amazing race
[{'answer': 'Josh Kilmer - Purcell', 'provenance': [{'wikipedia_id': '35744854', 'title': 'The Amazing Race 21', 'start_paragraph_id': 13, 'start_character': 52, 'end_paragraph_id': 13, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Production.:Cast.\n'}]}, {'answer': 'Brent Ridge', 'provenance': [{'wikipedia_id': '35744854', 'title': 'The Amazing Race 21', 'start_paragraph_id': 3, 'start_character': 71, 'end_paragraph_id': 3, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '35744854', 'title': 'The Amazing Race 21', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 123, 'bleu_score': 0.9067110266941041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3562680289149725620}, 'section': 'Section::::Abstract.'}]}]