Question: who played jacks father on without a trace
[{'answer': 'Martin Landau', 'provenance': [{'wikipedia_id': '7230348', 'title': 'Jack Malone', 'start_paragraph_id': 6, 'start_character': 73, 'end_paragraph_id': 6, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Without a Trace.\n'}]}, {'provenance': [{'wikipedia_id': '7230348', 'title': 'Jack Malone', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 329, 'bleu_score': 0.9645876452711911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8674473885986166218}, 'section': 'Section::::Without a Trace.\n'}]}]