Question: who plays the grim reaper in billy and mandy
[{'answer': 'Greg Eagles', 'provenance': [{'wikipedia_id': '7216989', 'title': 'The Grim Adventures of Billy & Mandy', 'start_paragraph_id': 4, 'start_character': 62, 'end_paragraph_id': 4, 'end_character': 73, 'bleu_score': 1.0, 'section': 'Section::::Premise.\n'}]}, {'provenance': [{'wikipedia_id': '7216989', 'title': 'The Grim Adventures of Billy & Mandy', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 837, 'bleu_score': 0.839587357215355, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10021322180997087872}, 'section': 'Section::::Premise.\n'}]}]