从Dbpedia（Jena）获取URI的标签

Question

我一直在尝试使用sparql查询获取标签或文字值。我当前的查询是构造查询。它已经非常正确地运作了。我正在使用jena模型来读取结果集。

String queryString = "PREFIX owl: <http://www.w3.org/2002/07/owl#>"
                + "PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>"
                + "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>"
                + "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>"
                + "PREFIX foaf: <http://xmlns.com/foaf/0.1/>" + "PREFIX dc: <http://purl.org/dc/elements/1.1/>"
                + "PREFIX dbr: <http://dbpedia.org/resource/>" + "PREFIX dbpedia2: <http://dbpedia.org/property/>"
                + "PREFIX dbpedia: <http://dbpedia.org/>" + "PREFIX skos: <http://www.w3.org/2004/02/skos/core#>"
                + "PREFIX dbo: <http://dbpedia.org/ontology/>" + 
                "CONSTRUCT {<http://dbpedia.org/resource/Karim_Benzema> ?p ?o} where {"
                + "<http://dbpedia.org/resource/Karim_Benzema> ?p ?o BIND(datatype(?o) as ?dt) FILTER(IF(isliteral(?o) && !bound(?dt), langMatches(lang(?o),'en'), true))" +

        "OPTIONAL{?o rdfs:label ?label . FILTER(langMatches(lang(?label),'en'))}}";
        Query query = QueryFactory.create(queryString);
        QueryExecution qexec = QueryExecutionFactory.sparqlService("http://dbpedia.org/sparql", query);


        FileOutputStream oFile;
        try {
            oFile = new FileOutputStream("output4.ttl", false);
            Model result21 = qexec.execConstruct();
            result21.write(oFile, "TTL");

        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        qexec.close();
        FileManager.get().addLocatorClassLoader(Main.class.getClassLoader());
        //Model model = FileManager.get().loadModel("output4.xml", null, "RDF/XML");
        try {
            Model model=ModelFactory.createDefaultModel();
            model.read(new FileInputStream("output4.ttl"),null,"TTL");


        StmtIterator iter = model.listStatements();
        try {
            while (iter.hasNext()) {
                Statement stmt = iter.next();
                Resource s = stmt.getSubject();
                Resource p = stmt.getPredicate();
                RDFNode o = stmt.getObject();
                //System.out.println(s.toString());
                //System.out.println(p.toString());
                System.out.println(o.toString());
                listOfString.add(o.toString());
            //  if(o.isLiteral()){System.out.println(o.asLiteral().getLexicalForm());} //else {System.out.println(o);}
                //System.out.println("");
            }
        } finally {
            if (iter != null)
                iter.close();
        }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

我正在检索的谓词和对象如下： -

  

http://dbpedia.org/property/nationalteam葡萄牙U15 @ en

     

http://dbpedia.org/property/caps   196 ^^ http://www.w3.org/2001/XMLSchema#integer

     

http://www.w3.org/1999/02/22-rdf-syntax-ns#type   http://schema.org/Person

     

http://www.w3.org/1999/02/22-rdf-syntax-ns#type   http://dbpedia.org/class/yago/FootballPlayer110101634

     

http://www.w3.org/1999/02/22-rdf-syntax-ns#type   http://dbpedia.org/class/yago/ManchesterUnitedF.C.Players

     

http://www.w3.org/2002/07/owl#sameAs   http://sw.opencyc.org/concept/Mx4rpQzh81h_Ed-LXQAhm0kILA

     

http://dbpedia.org/property/youthyears   1997 ^^ http://www.w3.org/2001/XMLSchema#integer

     

http://dbpedia.org/property/nationalteamUpdate   2015年9月7日^^ http://www.w3.org/2001/XMLSchema#date

     

http://dbpedia.org/property/nationalteam   http://dbpedia.org/resource/Portugal_national_under-17_football_team

     

http://purl.org/voc/vrank#hasRank 5a1e723ab34fab6f86528369689e6f7f

     

http://dbpedia.org/property/name Cristiano Ronaldo @ en

     

http://dbpedia.org/property/width   31.0 ^^ http://dbpedia.org/datatype/perCent

如何只获取标签或值而不是URI？

根据AKSW更新查询：

PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX dbr: <http://dbpedia.org/resource/>
PREFIX dbpedia2: <http://dbpedia.org/property/>
PREFIX dbpedia: <http://dbpedia.org/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX dbo: <http://dbpedia.org/ontology/>
CONSTRUCT {
<http://dbpedia.org/page/Cristiano_Ronaldo> ?p ?o
} 
WHERE {
<http://dbpedia.org/page/Cristiano_Ronaldo> ?p ?o BIND(datatype(?o) as ?dt) FILTER(IF(isliteral(?o) && !bound(?dt), langMatches(lang(?o),'en'), true))
OPTIONAL{?o rdfs:label ?label . FILTER(langMatches(lang(?label),'en'))}
}