-- 发布时间：10/25/2005 10:49:00 PM
-- RDF如何查询Instances－>ObjectProperty->Instances
马上就要答辩了，有个问题没有解决。
如何在下列的OWL中查询出guangdong，govern，fosan（Province，Govern，Zone）。
RDQL帮助文件的示例中的RDF十分简单，均是左右包夹的。
<rdf:Description rdf:about="http://somewhere/RebeccaSmith/">
<vCard:FN>Becky Smith</vCard:FN>
<vCard:N rdf:parseType="Resource">
<vCard:Family>Smith</vCard:Family>
<vCard:Given>Rebecca</vCard:Given>
</vCard:N>
</rdf:Description>
要查询的RDF代码如下
<?xml version="1.0"?>
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns="http://www.owl-ontologies.com/unnamed.owl#"
xml:base="http://www.owl-ontologies.com/unnamed.owl">
<owl:Ontology rdf:about=""/>
<owl:Class rdf:ID="Zone"/>
<owl:Class rdf:ID="Province"/>
<owl:ObjectProperty rdf:ID="Govern">
<rdfs:range rdf:resource="#Zone"/>
<rdfs:domain rdf:resource="#Province"/>
</owl:ObjectProperty>
<owl:ObjectProperty rdf:ID="Neighbor">
<rdfs:range rdf:resource="#Zone"/>
<rdfs:domain rdf:resource="#Zone"/>
</owl:ObjectProperty>
<owl:ObjectProperty rdf:ID="Belong">
<rdfs:range rdf:resource="#Province"/>
<rdfs:domain rdf:resource="#Zone"/>
</owl:ObjectProperty>
<Province rdf:ID="guangdong">
<Govern>
<Zone rdf:ID="fosan">
<Neighbor>
<Zone rdf:ID="guangzhou">
<Neighbor rdf:resource="#fosan"/>
<Belong rdf:resource="#guangdong"/>
<Neighbor>
<Zone rdf:ID="dongguan">
<Neighbor rdf:resource="#fosan"/>
<Neighbor rdf:resource="#guangzhou"/>
<Belong rdf:resource="#guangdong"/>
</Zone>
</Neighbor>
</Zone>
</Neighbor>
<Belong rdf:resource="#guangdong"/>
<Neighbor rdf:resource="#dongguan"/>
</Zone>
</Govern>
<Govern rdf:resource="#guangzhou"/>
<Govern rdf:resource="#dongguan"/>
</Province>
<Zone rdf:ID="mianyang">
<Belong>
<Province rdf:ID="sichuan">
<Govern rdf:resource="#mianyang"/>
<Govern>
<Zone rdf:ID="lesan">
<Belong rdf:resource="#sichuan"/>
<Neighbor rdf:resource="#mianyang"/>
</Zone>
</Govern>
</Province>
</Belong>
<Neighbor rdf:resource="#lesan"/>
</Zone>
</rdf:RDF>
