小编fab*_*fab的帖子

我希望有人可以帮助我解决这个问题,这个问题可能很容易解决:

我想针对以下RDF运行SPARQL查询(在N3中注明,RDF/XMl位于此处).这是期刊文章的描述以及期刊,作者和出版商的描述:

 @prefix bibo: <http://purl.org/ontology/bibo/> .
 @prefix dc: <http://purl.org/dc/elements/1.1/> .
 @prefix ex: <http://example.org/thesis/> .
 @prefix foaf: <http://xmlns.com/foaf/0.1/> .
 @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

<ex:XY>     a bibo:Article;
     dc:creator ex:umstaetter;
     dc:date "2008-11-01";
     dc:isPartOf ex:bibdienst;
     dc:title "DDC in Europa"@de;
     bibo:endPage "1221";
     bibo:issue "11";
     bibo:language "de";
     bibo:pageStart "1194";
     bibo:uri <http://www.zlb.de/Erschliessung020309BD.pdf>;
     bibo:volume "42" .

<ex:bibdienst>     a bibo:Journal;
     dc:publisher ex:zlb;
     dc:title "Bibliotheksdienst"@de;
     bibo:issn "00061972" .

<ex:umstaetter>     a foaf:person;
     foaf:birthday "1941-06-12";
     foaf:gender "Male";
     foaf:givenName "Walther";
     foaf:homepage <http://www.ib.hu-berlin.de/~wumsta/index.html>;
     foaf:img "http://libreas.eu/ausgabe7/pictures/wumstaetter1.jpg";
     foaf:name "Walther Umst\u00E4tter";
     foaf:surname "Umst\u00E4tter";
     foaf:title "Prof. …