Question: who does the voice for slinky in toy story
[{'answer': 'James Albert Varney Jr .', 'provenance': [{'wikipedia_id': '255887', 'title': 'Jim Varney', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '255887', 'title': 'Jim Varney', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 472, 'bleu_score': 0.8312211294124131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11471201255975451591}, 'section': 'Section::::Abstract.'}]}]