Question: who played the devil in tenacious d movie
[{'answer': 'Dave Grohl', 'provenance': [{'wikipedia_id': '2420966', 'title': 'Tenacious D in The Pick of Destiny', 'start_paragraph_id': 48, 'start_character': 99, 'end_paragraph_id': 48, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Music.\n'}]}]