Question: who played the sheriff in carry on cowboy
[{'answer': 'Jon Pertwee', 'provenance': [{'wikipedia_id': '3737168', 'title': 'Carry On Cowboy', 'start_paragraph_id': 3, 'start_character': 311, 'end_paragraph_id': 3, 'end_character': 322, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}]