Question: who plays the cdc doctor on designated survivor
[{'answer': 'Kiefer Sutherland', 'provenance': [{'wikipedia_id': '54588729', 'title': 'Designated Survivor (season 2)', 'start_paragraph_id': 6, 'start_character': 12, 'end_paragraph_id': 6, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Cast and characters.:Main.\n'}]}]