Question: when did the us leave japan after wwii
[{'answer': 'April 28 , 1952', 'provenance': [{'wikipedia_id': '87995', 'title': 'Occupation of Japan', 'start_paragraph_id': 73, 'start_character': 292, 'end_paragraph_id': 73, 'end_character': 307, 'bleu_score': 1.0, 'section': 'Section::::End of the occupation.\n'}]}, {'provenance': [{'wikipedia_id': '87995', 'title': 'Occupation of Japan', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 693, 'bleu_score': 0.570544952210522, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6472038121347680094}, 'section': 'Section::::Abstract.'}]}]