Question: when did piney die in sons of anarchy
[{'answer': 'Season 4', 'provenance': [{'wikipedia_id': '23216533', 'title': 'Piney Winston', 'start_paragraph_id': 16, 'start_character': 11, 'end_paragraph_id': 16, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Character biography.:Season 3.\n'}]}, {'provenance': [{'wikipedia_id': '23216533', 'title': 'Piney Winston', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 1144, 'bleu_score': 0.977010879641078, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15021422382931168781}, 'section': 'Section::::Character biography.:Season 4.\n'}]}]