data9.rdf

来自「jena2.5.4推理机系统的一种最基本实现 HP实验室出品」· RDF 代码 · 共 37 行

<?xml version="1.0"?>

<!DOCTYPE rdf:RDF [
    <!ENTITY eg   'http://www.hpl.hp.com/semweb/2003/eg#'>
    <!ENTITY rdf  'http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
    <!ENTITY rdfs 'http://www.w3.org/2000/01/rdf-schema#'>
]>

<rdf:RDF xmlns:rdf="&rdf;" xmlns:rdfs="&rdfs;" xmlns="&eg;">

  <rdf:Description rdf:about="&eg;a">
    <p rdf:resource="&eg;b"/>
    <rdf:type rdf:resource="&eg;C1"/>
  </rdf:Description>

  <rdf:Description rdf:about="&eg;b">
    <p rdf:resource="&eg;c"/>
    <rdf:type rdf:resource="&eg;C2"/>
  </rdf:Description>

  <rdf:Description rdf:about="&eg;c">
    <p rdf:resource="&eg;d"/>
    <rdf:type rdf:resource="&eg;C3"/>
  </rdf:Description>
  
  <!-- nasty nested metalevel decalarations -->
  
  <rdf:Description rdf:about="&eg;sc">
    <sp rdf:resource="&rdfs;subClassOf"/>
  </rdf:Description>

  <rdf:Description rdf:about="&eg;sp">
    <rdfs:subPropertyOf rdf:resource="&rdfs;subPropertyOf"/>
  </rdf:Description>

</rdf:RDF>