Question: who is jack in when calls the heart
[{'answer': 'Daniel Lissing', 'provenance': [{'wikipedia_id': '41630866', 'title': 'When Calls the Heart', 'start_paragraph_id': 2, 'start_character': 352, 'end_paragraph_id': 2, 'end_character': 366, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '41630866', 'title': 'When Calls the Heart', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 43, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 317769489194766945}, 'section': 'Section::::Cast.:Main.\n'}]}]