Question: who plays the gorilla attar in the 2001 movie planet of the apes
[{'answer': 'Michael Clarke Duncan', 'provenance': [{'wikipedia_id': '20181491', 'title': 'Planet of the Apes (2001 film)', 'start_paragraph_id': 1, 'start_character': 142, 'end_paragraph_id': 1, 'end_character': 163, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20181491', 'title': 'Planet of the Apes (2001 film)', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 225, 'bleu_score': 0.83851300471302, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2329352199243550530}, 'section': 'Section::::Cast.\n'}]}]