Question: who played john wayne's grandson in big jake
[{'answer': 'Ethan Wayne', 'provenance': [{'wikipedia_id': '2232503', 'title': 'Big Jake', 'start_paragraph_id': 39, 'start_character': 175, 'end_paragraph_id': 39, 'end_character': 186, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}, {'provenance': [{'wikipedia_id': '2232503', 'title': 'Big Jake', 'start_paragraph_id': 39, 'start_character': 0, 'end_paragraph_id': 39, 'end_character': 237, 'bleu_score': 0.950578622812921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12764893210666640686}, 'section': 'Section::::Production.\n'}]}]