Question: when did andy murray won sports personality of the year
[{'answer': '2013', 'provenance': [{'wikipedia_id': '20823568', 'title': 'BBC Sports Personality of the Year Award', 'start_paragraph_id': 4, 'start_character': 753, 'end_paragraph_id': 4, 'end_character': 757, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '2015'}, {'answer': '2016'}]