Question: who played the sheriff on the big valley
[{'answer': 'Douglas Kennedy', 'provenance': [{'wikipedia_id': '660034', 'title': 'The Big Valley', 'start_paragraph_id': 21, 'start_character': 12, 'end_paragraph_id': 21, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Characters.:Minor.\n'}]}, {'provenance': [{'wikipedia_id': '660034', 'title': 'The Big Valley', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 114, 'bleu_score': 0.8702397637697911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15618896878262922813}, 'section': 'Section::::Characters.:Minor.\n'}]}]