Question: who voices copper in the fox and the hound
[{'answer': 'Kurt Russell', 'provenance': [{'wikipedia_id': '1371138', 'title': 'The Fox and the Hound', 'start_paragraph_id': 1, 'start_character': 553, 'end_paragraph_id': 1, 'end_character': 565, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]