Question: when did japan open up to the west
[{'answer': '1853 -- 54'}, {'provenance': [{'wikipedia_id': '11095125', 'title': 'Perry Expedition', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1006, 'bleu_score': 0.932493254344647, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8551587144343988130}, 'section': 'Section::::Abstract.'}]}]