Question: who plays jack in once upon a time
[{'answer': 'Nathan Dean Parsons', 'provenance': [{'wikipedia_id': '23355109', 'title': 'Nathan Parsons', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23355109', 'title': 'Nathan Parsons', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 484, 'bleu_score': 0.9375874466695201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15131994873281558050}, 'section': 'Section::::Abstract.'}]}]