Question: who was the voice of casper the friendly ghost
[{'answer': 'Cecil Roy', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 20, 'start_character': 26, 'end_paragraph_id': 20, 'end_character': 35, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Alan Shay', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 21, 'start_character': 12, 'end_paragraph_id': 21, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Mae Questel'}, {'answer': 'Norma MacMillan', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 22, 'start_character': 12, 'end_paragraph_id': 22, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Julie McWhirter', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 23, 'start_character': 12, 'end_paragraph_id': 23, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Malachi Pearson', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 25, 'start_character': 12, 'end_paragraph_id': 25, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Jeremy Foley', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 27, 'start_character': 12, 'end_paragraph_id': 27, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Brendon Ryan Barrett', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 28, 'start_character': 12, 'end_paragraph_id': 28, 'end_character': 32, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Devon Werkheiser', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 29, 'start_character': 12, 'end_paragraph_id': 29, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}, {'answer': 'Devon Sawa', 'provenance': [{'wikipedia_id': '21132349', 'title': 'Casper the Friendly Ghost', 'start_paragraph_id': 26, 'start_character': 12, 'end_paragraph_id': 26, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Actors who have voiced or portrayed Casper.\n'}]}]