Question: who has scored the most runs in ashes history
[{'answer': 'Don Bradman', 'provenance': [{'wikipedia_id': '1930107', 'title': 'List of Ashes series', 'start_paragraph_id': 3, 'start_character': 337, 'end_paragraph_id': 3, 'end_character': 348, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1930107', 'title': 'List of Ashes series', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1035, 'bleu_score': 0.872415939352695, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7443245126307968691}, 'section': 'Section::::Abstract.'}]}]