Question: who plays the senator in planet of the apes
[{'answer': 'David Warner', 'provenance': [{'wikipedia_id': '20181491', 'title': 'Planet of the Apes (2001 film)', 'start_paragraph_id': 20, 'start_character': 20, 'end_paragraph_id': 20, 'end_character': 32, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '20181491', 'title': 'Planet of the Apes (2001 film)', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 258, 'bleu_score': 0.950578622812921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14362925595499771679}, 'section': 'Section::::Cast.\n'}]}]