Question: who does the voice of cow and chicken
[{'answer': 'Charlie Adler', 'provenance': [{'wikipedia_id': '19349895', 'title': 'Cow and Chicken', 'start_paragraph_id': 4, 'start_character': 197, 'end_paragraph_id': 4, 'end_character': 210, 'bleu_score': 1.0, 'section': 'Section::::Premise.\n'}]}, {'provenance': [{'wikipedia_id': '19349895', 'title': 'Cow and Chicken', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 227, 'bleu_score': 0.772920308664455, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5708708781324771015}, 'section': 'Section::::Production.:Voice actors.\n'}]}]