Question: who saved ghost rider from his deal with mephisto
[{'answer': 'Zarathos', 'provenance': [{'wikipedia_id': '8743507', 'title': 'Ghost Rider (Johnny Blaze)', 'start_paragraph_id': 1, 'start_character': 430, 'end_paragraph_id': 1, 'end_character': 438, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8743507', 'title': 'Ghost Rider (Johnny Blaze)', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 435, 'bleu_score': 0.972407137066537, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5243433362545876468}, 'section': 'Section::::Fictional character biography.\n'}]}]