Question: who are the characters in metalocalypse based on
[{'answer': 'Dethklok', 'provenance': [{'wikipedia_id': '3384852', 'title': 'Dethklok', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 8, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3384852', 'title': 'Dethklok', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 400, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11740030268426791622}, 'section': 'Section::::Fictional background.\n'}]}]