Question: who did the voice of jack frost in rise of the guardians
[{'answer': 'Chris Pine', 'provenance': [{'wikipedia_id': '23399828', 'title': 'Rise of the Guardians', 'start_paragraph_id': 1, 'start_character': 335, 'end_paragraph_id': 1, 'end_character': 345, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23399828', 'title': 'Rise of the Guardians', 'start_paragraph_id': 9, 'start_character': 12, 'end_paragraph_id': 9, 'end_character': 342, 'bleu_score': 0.8870957134852171, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6104827141376605805}, 'section': 'Section::::Cast and characters.\n'}]}]