Question: who killed winry's parents in fullmetal alchemist
[{'answer': 'Scar', 'provenance': [{'wikipedia_id': '4726854', 'title': 'Winry Rockbell', 'start_paragraph_id': 3, 'start_character': 207, 'end_paragraph_id': 3, 'end_character': 211, 'bleu_score': 1.0, 'section': 'Section::::Appearances.\n'}]}, {'provenance': [{'wikipedia_id': '4726854', 'title': 'Winry Rockbell', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1789, 'bleu_score': 0.8573824688753531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15075407803860304019}, 'section': 'Section::::Appearances.\n'}]}]