Question: who plays the demon of fear in charmed
[{'answer': 'Billy Drago', 'provenance': [{'wikipedia_id': '3065276', 'title': 'Barbas (Charmed)', 'start_paragraph_id': 1, 'start_character': 290, 'end_paragraph_id': 1, 'end_character': 301, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3065276', 'title': 'Barbas (Charmed)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 410, 'bleu_score': 0.9226596185977011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6582270839857258806}, 'section': 'Section::::Abstract.'}]}]