Question: who is the lead actor in upcoming jack ryan prime series
[{'answer': 'John Krasinski', 'provenance': [{'wikipedia_id': '55456978', 'title': 'Jack Ryan (TV series)', 'start_paragraph_id': 1, 'start_character': 338, 'end_paragraph_id': 1, 'end_character': 352, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55456978', 'title': 'Jack Ryan (TV series)', 'start_paragraph_id': 7, 'start_character': 204, 'end_paragraph_id': 7, 'end_character': 670, 'bleu_score': 0.821982469727484, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14503590830920291012}, 'section': 'Section::::Cast and characters.:Main.\n'}]}]