Question: what was japan foreign policy in the tokugawa era
[{'answer': 'isolationist', 'provenance': [{'wikipedia_id': '164945', 'title': 'Edo period', 'start_paragraph_id': 1, 'start_character': 246, 'end_paragraph_id': 1, 'end_character': 258, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '164945', 'title': 'Edo period', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 534, 'bleu_score': 0.902421393919676, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1468582449444621640}, 'section': 'Section::::Abstract.'}]}]