Question: who did the voice of slinky in toy story 3
[{'answer': 'Blake Clark', 'provenance': [{'wikipedia_id': '1213838', 'title': 'Toy Story 3', 'start_paragraph_id': 2, 'start_character': 620, 'end_paragraph_id': 2, 'end_character': 631, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]