Question: who plays caeser in planet of the apes
[{'answer': 'Andy Serkis', 'provenance': [{'wikipedia_id': '27279709', 'title': 'Rise of the Planet of the Apes', 'start_paragraph_id': 1, 'start_character': 193, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]