Question: who is ghost rider in agents of shield
[{'answer': 'Gabriel Luna', 'provenance': [{'wikipedia_id': '49635999', 'title': 'Agents of S.H.I.E.L.D. (season 4)', 'start_paragraph_id': 2, 'start_character': 578, 'end_paragraph_id': 2, 'end_character': 590, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '49635999', 'title': 'Agents of S.H.I.E.L.D. (season 4)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1169, 'bleu_score': 0.9457515319639941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13191559525395532760}, 'section': 'Section::::Abstract.'}]}]