Question: who did marlon brando play in apocalypse now
[{'answer': 'Colonel Walter E. Kurtz', 'provenance': [{'wikipedia_id': '18951054', 'title': 'Apocalypse Now', 'start_paragraph_id': 5, 'start_character': 67, 'end_paragraph_id': 5, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '18951054', 'title': 'Apocalypse Now', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 286, 'bleu_score': 0.8879659171421961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7911441872328046061}, 'section': 'Section::::Cast.\n'}]}]