Question: who played the warden in the movie shawshank redemption
[{'answer': 'Robert Patrick Gunton Jr.', 'provenance': [{'wikipedia_id': '1584240', 'title': 'Bob Gunton', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1584240', 'title': 'Bob Gunton', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 526, 'bleu_score': 0.8620750966010491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15881810475768755432}, 'section': 'Section::::Abstract.'}]}]