Question: when did korea separate into north and south
[{'answer': '1945', 'provenance': [{'wikipedia_id': '325746', 'title': 'Division of Korea', 'start_paragraph_id': 1, 'start_character': 58, 'end_paragraph_id': 1, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '17 August 1945', 'provenance': [{'wikipedia_id': '325746', 'title': 'Division of Korea', 'start_paragraph_id': 10, 'start_character': 1016, 'end_paragraph_id': 10, 'end_character': 1030, 'bleu_score': 1.0, 'section': 'Section::::Historical background.:World War II.\n'}]}, {'provenance': [{'wikipedia_id': '325746', 'title': 'Division of Korea', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6089314104430627121}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '325746', 'title': 'Division of Korea', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 1058, 'bleu_score': 0.710864415280496, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6089314104430627121}, 'section': 'Section::::Historical background.:World War II.\n'}]}, {'provenance': [{'wikipedia_id': '325746', 'title': 'Division of Korea', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Division of Korea began at the end of World War II in 1945', 'The Division of Korea began at the end of World War II in 1945.']}}]}]