Question: how many episodes are there in the crown on netflix
[{'answer': '20', 'provenance': [{'wikipedia_id': '47048067', 'title': 'The Crown (TV series)', 'start_paragraph_id': 1, 'start_character': 250, 'end_paragraph_id': 1, 'end_character': 252, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]