Question: who did ronnie barker play in open all hours
[{'answer': 'Arkwright', 'provenance': [{'wikipedia_id': '186913', 'title': 'Open All Hours', 'start_paragraph_id': 3, 'start_character': 100, 'end_paragraph_id': 3, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Premise.\n'}]}]