Question: who has won the most sports personality of the year
[{'answer': 'tennis player Andy Murray', 'provenance': [{'wikipedia_id': '20823568', 'title': 'BBC Sports Personality of the Year Award', 'start_paragraph_id': 3, 'start_character': 47, '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': 757, 'bleu_score': 0.573712938088197, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10793858644531547027}, 'section': 'Section::::Abstract.'}]}]