Question: who is koba in dawn of the planet of the apes
[{'answer': 'Toby Kebbell', 'provenance': [{'wikipedia_id': '36023964', 'title': 'Dawn of the Planet of the Apes', 'start_paragraph_id': 1, 'start_character': 217, 'end_paragraph_id': 1, 'end_character': 229, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36023964', 'title': 'Dawn of the Planet of the Apes', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 136, 'bleu_score': 0.8970773746801091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11685238802807883557}, 'section': 'Section::::Cast.:Apes.\n'}]}]