Question: who has won the most mvps in baseball
[{'answer': 'Barry Bonds', 'provenance': [{'wikipedia_id': '3858', 'title': 'Major League Baseball Most Valuable Player Award', 'start_paragraph_id': 4, 'start_character': 204, 'end_paragraph_id': 4, 'end_character': 215, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3858', 'title': 'Major League Baseball Most Valuable Player Award', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 500, 'bleu_score': 0.9361374222844411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1970016164720631967}, 'section': 'Section::::Abstract.'}]}]