Question: who plays buzz lightyear in toy story 3
[{'answer': 'Tim Allen', 'provenance': [{'wikipedia_id': '1213838', 'title': 'Toy Story 3', 'start_paragraph_id': 2, 'start_character': 260, 'end_paragraph_id': 2, 'end_character': 269, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1213838', 'title': 'Toy Story 3', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 39, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13249326052676123001}, 'section': 'Section::::Voice cast.\n'}]}]