Question: when did north korea split from south korea
[{'answer': '1953', 'provenance': [{'wikipedia_id': '325746', 'title': 'Division of Korea', 'start_paragraph_id': 3, 'start_character': 189, 'end_paragraph_id': 3, 'end_character': 193, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '325746', 'title': 'Division of Korea', 'start_paragraph_id': 3, 'start_character': 134, 'end_paragraph_id': 3, 'end_character': 316, 'bleu_score': 0.9383861709333501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3176576191860534315}, 'section': 'Section::::Abstract.'}]}]