Question: how many episodes is the jack ryan series
[{'answer': '8', 'provenance': [{'wikipedia_id': '55456978', 'title': 'Jack Ryan (TV series)', 'start_paragraph_id': 1, 'start_character': 215, 'end_paragraph_id': 1, 'end_character': 216, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]