Question: who played caesar in dawn of the planet of the apes
[{'answer': 'Andy Serkis', 'provenance': [{'wikipedia_id': '36023964', 'title': 'Dawn of the Planet of the Apes', 'start_paragraph_id': 1, 'start_character': 163, 'end_paragraph_id': 1, 'end_character': 174, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36023964', 'title': 'Dawn of the Planet of the Apes', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 90, 'bleu_score': 0.69647056655157, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16609594324429143937}, 'section': 'Section::::Cast.:Apes.\n'}]}]