Question: who has won the most championships in nascar
[{'answer': 'Richard Petty', 'provenance': [{'wikipedia_id': '27768938', 'title': 'List of Monster Energy NASCAR Cup Series champions', 'start_paragraph_id': 3, 'start_character': 72, 'end_paragraph_id': 3, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Dale Earnhardt', 'provenance': [{'wikipedia_id': '27768938', 'title': 'List of Monster Energy NASCAR Cup Series champions', 'start_paragraph_id': 3, 'start_character': 87, 'end_paragraph_id': 3, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Jimmie Johnson', 'provenance': [{'wikipedia_id': '27768938', 'title': 'List of Monster Energy NASCAR Cup Series champions', 'start_paragraph_id': 3, 'start_character': 107, 'end_paragraph_id': 3, 'end_character': 121, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27768938', 'title': 'List of Monster Energy NASCAR Cup Series champions', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 329, 'bleu_score': 0.864481805420065, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16641582460327891777}, 'section': 'Section::::Abstract.'}]}]