Question: who plays the walking boss in cool hand luke
[{'answer': 'Morgan Woodward', 'provenance': [{'wikipedia_id': '161897', 'title': 'Cool Hand Luke', 'start_paragraph_id': 6, 'start_character': 318, 'end_paragraph_id': 6, 'end_character': 333, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '161897', 'title': 'Cool Hand Luke', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 614, 'bleu_score': 0.9806740509884301, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13483706354295090737}, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '161897', 'title': 'Cool Hand Luke', 'section': 'Section::::Production.:Casting.\n', 'start_paragraph_id': 45, 'end_paragraph_id': 45, 'meta': {'evidence_span': ['Morgan Woodward', 'The role of Luke\'s dying mother, Arletta, who visits him in prison, was passed to Jo Van Fleet after it was rejected by Bette Davis. Morgan Woodward was cast as Boss Godfrey, a laconic, cruel and remorseless prison officer who Woodward described as a "walking Mephistopheles."', 'Morgan Woodward was cast as Boss Godfrey, a laconic, cruel and remorseless prison officer who Woodward described as a "walking Mephistopheles."']}}]}, {'provenance': [{'wikipedia_id': '161897', 'title': 'Cool Hand Luke', 'section': 'Section::::Plot.\n', 'start_paragraph_id': 6, 'end_paragraph_id': 6, 'meta': {'evidence_span': ['Morgan Woodward', 'He is sentenced to two years in prison and sent to a Florida chain gang prison run by a stern warden, the Captain (Strother Martin), and a stoic rifleman, Walking Boss Godfrey (Morgan Woodward), whose eyes are always covered by a pair of mirrored sunglasses', 'a stoic rifleman, Walking Boss Godfrey (Morgan Woodward), whose eyes are always covered by a pair of mirrored sunglasses.']}}]}]