Question: who holds the most home runs in mlb history
[{'answer': 'Barry Bonds', 'provenance': [{'wikipedia_id': '886286', 'title': 'List of Major League Baseball career home run leaders', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '886286', 'title': 'List of Major League Baseball career home run leaders', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 367, 'bleu_score': 0.821046866795012, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14212392892169843075}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3850', 'title': 'Baseball', 'section': 'Section::::History.:In the United States.:Attendance records and the age of steroids.\n', 'start_paragraph_id': 51, 'end_paragraph_id': 51, 'meta': {'evidence_span': ['Barry Bonds established the current record of 73 home runs in a single season', 'In 2001, Barry Bonds established the current record of 73 home runs in a single season.']}}]}, {'provenance': [{'wikipedia_id': '14019702', 'title': 'List of milestone home runs by Barry Bonds', 'section': 'Section::::Abstract.', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ["Barry Bonds became the major leagues' career home run champion by hitting his 756th career home run, which surpassed Hank Aaron's total.", "On August 7, 2007, Barry Bonds became the major leagues' career home run champion by hitting his 756th career home run, which surpassed Hank Aaron's total."]}}]}, {'provenance': [{'wikipedia_id': '886286', 'title': 'List of Major League Baseball career home run leaders', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['Barry Bonds holds the Major League Baseball home run record with 762. He passed Hank Aaron, who hit 755, on August 7, 2007.', 'Barry Bonds holds the Major League Baseball home run record with 762. He passed Hank Aaron, who hit 755, on August 7, 2007.']}}]}]