Question: where did japan get its first writing system from
[{'answer': 'adopted Chinese characters', 'provenance': [{'wikipedia_id': '1234482', 'title': 'Japanese writing system', 'start_paragraph_id': 1, 'start_character': 86, 'end_paragraph_id': 1, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1234482', 'title': 'Japanese writing system', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 676, 'bleu_score': 0.8985536259618481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16574947807271128830}, 'section': 'Section::::Abstract.'}]}]