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--  作者：byyter
--  发布时间：4/20/2005 7:00:00 PM

--  jena求助！
jena文档中“推理支持”部分，有一个Computer的ontology的tbox文件owlDemoSchema.owl，并且有abox文件owlDemoData.rdf，我按它那么写，为什么列出的statement里面没有推理得出的信息:

#########owlDemoSchema.owl#####################
<?xml version="1.0"?>

<!DOCTYPE rdf:RDF [
    <!ENTITY eg   'urn:x-hp:eg/'>
    <!ENTITY rdf  'http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
    <!ENTITY rdfs 'http://www.w3.org/2000/01/rdf-schema#'>
    <!ENTITY xsd  'http://www.w3.org/2001/XMLSchema#'>
    <!ENTITY owl  "http://www.w3.org/2002/07/owl#" >
]>

<rdf:RDF xmlns:rdf="&rdf;" xmlns:rdfs="&rdfs;" xmlns:xsd="&xsd;" xmlns:owl="&owl;"
         xml:base="urn:x-hp:eg/" xmlns:eg="&eg;" xmlns="&eg;">

  <owl:Class rdf:about="&eg;Computer">
      <rdfs:subClassOf>
          <rdf:Description>
             <owl:intersectionOf rdf:parseType="Collection">
                <owl:Restriction>
                   <owl:onProperty rdf:resource="&eg;hasMotherBoard"/>
                   <owl:maxCardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:maxCardinality>
                </owl:Restriction>
              </owl:intersectionOf>
           </rdf:Description>
       </rdfs:subClassOf>
  </owl:Class>
  
  <owl:Class rdf:about="&eg;MotherBoard" />
  
  <owl:Class rdf:about="&eg;GraphicsCard" />
  
  <owl:Class rdf:about="&eg;Bundle" />

  <owl:Class rdf:about="&eg;GameBundle">
      <rdfs:subClassOf rdf:resource="&eg;Bundle" />
  </owl:Class>
  
  <eg:GraphicsCard rdf:about="&eg;budgetGraphics" />
  <eg:GraphicsCard rdf:about="&eg;gamingGraphics" />
  <eg:GraphicsCard rdf:about="&eg;DTPGraphics" />
  
  <owl:ObjectProperty rdf:about="&eg;hasComponent">
      <rdf:type rdf:resource="&owl;TransitiveProperty" />
  </owl:ObjectProperty>
  
  <owl:ObjectProperty rdf:about="&eg;hasGraphics">
      <rdfs:range rdf:resource="&eg;GraphicsCard" />
      <rdfs:subPropertyOf rdf:resource="&eg;hasComponent" />
  </owl:ObjectProperty>
  
  <owl:ObjectProperty rdf:about="&eg;hasMotherBoard">
      <rdfs:range rdf:resource="&eg;MotherBoard" />
      <rdfs:domain rdf:resource="&eg;Computer" />
      <rdfs:subPropertyOf rdf:resource="&eg;hasComponent" />
  </owl:ObjectProperty>
  
  <owl:ObjectProperty rdf:about="&eg;hasBundle">
      <rdfs:domain rdf:resource="&eg;Computer" />
  </owl:ObjectProperty>
   
  <owl:Class rdf:about="&eg;GamingComputer">
      <owl:equivalentClass>
          <rdf:Description>
             <owl:intersectionOf rdf:parseType="Collection">
                <owl:Restriction>
                   <owl:onProperty rdf:resource="&eg;hasComponent" />
                   <owl:hasValue rdf:resource="&eg;gamingGraphics" />
                </owl:Restriction>
                <owl:Restriction>
                   <owl:onProperty rdf:resource="&eg;hasBundle" />
                   <owl:someValuesFrom rdf:resource="&eg;GameBundle" />
                </owl:Restriction>
                <owl:Class rdf:about="&eg;Computer" />
              </owl:intersectionOf>
           </rdf:Description>
       </owl:equivalentClass>
  </owl:Class>

</rdf:RDF>
#############################

#######owlDemoData.rdf############
<?xml version="1.0"?>

<!DOCTYPE rdf:RDF [
    <!ENTITY eg   'urn:x-hp:eg/'>
    <!ENTITY rdf  'http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
    <!ENTITY rdfs 'http://www.w3.org/2000/01/rdf-schema#'>
    <!ENTITY xsd  'http://www.w3.org/2001/XMLSchema#'>
    <!ENTITY owl  "http://www.w3.org/2002/07/owl#" >
]>

<rdf:RDF xmlns:rdf="&rdf;" xmlns:rdfs="&rdfs;" xmlns:xsd="&xsd;" xmlns:owl="&owl;"
         xml:base="urn:x-hp:eg/" xmlns="&eg;">

  <Computer rdf:about="&eg;whiteBoxZX">
    <hasMotherBoard rdf:resource="&eg;nForce" />
    <hasBundle>
        <GameBundle rdf:about="&eg;actionPack" />
    </hasBundle>
  </Computer>
  
  <Computer rdf:about="&eg;whiteBoxZX">
    <hasMotherBoard>
       <rdf:Description rdf:about="&eg;unknownMB" >
         <hasGraphics rdf:resource="&eg;gamingGraphics" />
       </rdf:Description>
    </hasMotherBoard>
  </Computer>

  <GamingComputer rdf:about="&eg;alienBox51" />
  
  <Computer rdf:about="&eg;bigName42">
    <hasMotherBoard rdf:resource="&eg;bigNameSpecialMB" />
    <hasBundle rdf:resource="&eg;binNameSpecialBundle" />
  </Computer>  

</rdf:RDF>
#########################

##########程序代码##################
    Model schema = ModelLoader.loadModel("file:data/owlDemoSchema.owl");
    Model data = ModelLoader.loadModel("file:data/owlDemoData.rdf");
    Reasoner reasoner = ReasonerRegistry.getOWLReasoner();
    reasoner = reasoner.bindSchema(schema);
    InfModel infmodel = ModelFactory.createInfModel(reasoner, data);

    Resource nForce = infmodel.getResource("urn:x-hp:eg/nForce");
    System.out.println("nForce *:");
    printStatements(infmodel, nForce, null, null);
#############################


文档中说运行结果是这样：
nForce *:
- (eg:nForce owl:sameIndividualAs eg:unknownMB)
- (eg:nForce owl:sameIndividualAs eg:nForce)
- (eg:nForce rdf:type owl:Thing)
- (eg:nForce owl:sameAs eg:unknownMB)
- (eg:nForce owl:sameAs eg:nForce)
- (eg:nForce rdf:type eg:MotherBoard)
- (eg:nForce rdf:type rdfs:Resource)
- (eg:nForce rdf:type a3b24:f7822755ad:-7ffd)
- (eg:nForce eg:hasGraphics eg:gamingGraphics)
- (eg:nForce eg:hasComponent eg:gamingGraphics)


而我的运行结果一条statement也没有，我又试了”urn:x-hp:eg/whiteBoxZX“，列出的statement也都是直接信息，没有inferenced信息

哪位高人能指点一下？

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