Question: who did the voice of arnold in hey arnold
[{'answer': 'Toran Caudell', 'provenance': [{'wikipedia_id': '206490', 'title': 'Hey Arnold!', 'start_paragraph_id': 6, 'start_character': 52, 'end_paragraph_id': 6, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::Premise.:Characters.\n'}]}, {'answer': 'Phillip Van Dyke', 'provenance': [{'wikipedia_id': '206490', 'title': 'Hey Arnold!', 'start_paragraph_id': 6, 'start_character': 67, 'end_paragraph_id': 6, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Premise.:Characters.\n'}]}, {'answer': 'Spencer Klein', 'provenance': [{'wikipedia_id': '206490', 'title': 'Hey Arnold!', 'start_paragraph_id': 6, 'start_character': 85, 'end_paragraph_id': 6, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::Premise.:Characters.\n'}]}, {'answer': 'Alex D. Linz', 'provenance': [{'wikipedia_id': '206490', 'title': 'Hey Arnold!', 'start_paragraph_id': 6, 'start_character': 100, 'end_paragraph_id': 6, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Premise.:Characters.\n'}]}, {'answer': 'Mason Vale Cotton', 'provenance': [{'wikipedia_id': '206490', 'title': 'Hey Arnold!', 'start_paragraph_id': 6, 'start_character': 117, 'end_paragraph_id': 6, 'end_character': 134, 'bleu_score': 1.0, 'section': 'Section::::Premise.:Characters.\n'}]}, {'provenance': [{'wikipedia_id': '206490', 'title': 'Hey Arnold!', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 515, 'bleu_score': 0.960196138847988, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8423244688193275604}, 'section': 'Section::::Premise.:Characters.\n'}]}]