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  <http://schema.org/name> "9：Grammar";
  <http://schema.org/workExample> [
    <http://schema.org/isPartOf> <https://w3id.org/jp-textbook/中学校/2020/英語/804>;
    <http://schema.org/pagination> "";
    <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://schema.org/Chapter>
  ];
  <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://w3id.org/jp-textbook/TeachingUnit>;
  <https://w3id.org/jp-textbook/authorizedYear> "2020"^^<http://www.w3.org/2001/XMLSchema#gYear>;
  <https://w3id.org/jp-textbook/cosMappingDescription> "言語材料|SVOC, SVO + to do, SVO + 原形";
  <https://w3id.org/jp-textbook/grade> 2;
  <https://w3id.org/jp-textbook/school> <https://w3id.org/jp-textbook/school/中学校>;
  <https://w3id.org/jp-textbook/subject> <https://w3id.org/jp-textbook/curriculum/中学校/2021/外国語/英語>;
  <https://w3id.org/jp-textbook/subjectArea> <https://w3id.org/jp-textbook/curriculum/中学校/2021/外国語>;
  <https://w3id.org/jp-textbook/teachingUnitType> <https://w3id.org/jp-textbook/curriculum/Standard>;
  <https://w3id.org/jp-textbook/unit1> "9";
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