Question: who has won the most titles in wwe history
[{'answer': 'John Cena', 'provenance': [{'wikipedia_id': '690083', 'title': 'List of WWE Champions', 'start_paragraph_id': 2, 'start_character': 66, 'end_paragraph_id': 2, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '690083', 'title': 'List of WWE Champions', 'start_paragraph_id': 4, 'start_character': 28, 'end_paragraph_id': 4, 'end_character': 353, 'bleu_score': 0.7385457931667201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4786178570454327805}, 'section': 'Section::::Abstract.'}]}]