Question: who plays the duke of edinburgh on the crown
[{'answer': 'Matt Smith', 'provenance': [{'wikipedia_id': '47048067', 'title': 'The Crown (TV series)', 'start_paragraph_id': 2, 'start_character': 278, 'end_paragraph_id': 2, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]