Question: who plays luke's dad on the oc
[{'answer': 'Brian McNamara', 'provenance': [{'wikipedia_id': '6394225', 'title': 'List of The O.C. characters', 'start_paragraph_id': 41, 'start_character': 26, 'end_paragraph_id': 41, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::Recurring characters.:Carson Ward.\n'}]}, {'provenance': [{'wikipedia_id': '6394225', 'title': 'List of The O.C. characters', 'start_paragraph_id': 41, 'start_character': 0, 'end_paragraph_id': 41, 'end_character': 1029, 'bleu_score': 0.9890406822930451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6899086840830053477}, 'section': 'Section::::Recurring characters.:Carson Ward.\n'}]}]