Question: who has won bbc sports personality of the year the most
[{'answer': 'Andy Murray', 'provenance': [{'wikipedia_id': '20823568', 'title': 'BBC Sports Personality of the Year Award', 'start_paragraph_id': 3, 'start_character': 61, 'end_paragraph_id': 3, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20823568', 'title': 'BBC Sports Personality of the Year Award', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 695, 'bleu_score': 0.6068071026978551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15741899354986731480}, 'section': 'Section::::Abstract.'}]}]