@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix void: <http://rdfs.org/ns/void#> .
@prefix zbwext: <http://zbw.eu/namespaces/zbw-extensions/> .
@prefix wd: <http://www.wikidata.org/entity/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix gnd: <https://d-nb.info/gnd/> .
@prefix ns0: <http://purl.org/ontology/gbv/> .

skos:exactMatch
  rdfs:subPropertyOf skos:closeMatch ;
  skos:definition "skos:exactMatch is used to link two concepts, indicating a high degree of confidence that the concepts can be used interchangeably across a wide range of information retrieval applications. skos:exactMatch is a transitive property, and is a sub-property of skos:closeMatch."@en ;
  rdfs:comment "skos:exactMatch is disjoint with each of the properties skos:broadMatch and skos:relatedMatch."@en ;
  rdfs:label "has exact match"@en .

<http://zbw.eu/stw>
  rdfs:label "Standard-Thesaurus Wirtschaft"@de, "STW Thesaurus for Economics"@en ;
  skos:prefLabel "Standard-Thesaurus Wirtschaft"@de, "STW Thesaurus for Economics"@en ;
  a void:Dataset, skos:ConceptScheme .

<http://zbw.eu/stw/descriptor/30191-5>
  rdfs:label "Fracking"@en, "Fracking"@de, "Hydrofracking"@de, "Hydraulic fracturing"@en ;
  skos:prefLabel "Fracking"@en, "Fracking"@de ;
  a zbwext:Descriptor, skos:Concept ;
  skos:related <http://zbw.eu/stw/descriptor/30193-1> .

<http://zbw.eu/stw/descriptor/14196-1>
  rdfs:label "Natural gas"@en, "Erdgas"@de, "Erdölgas"@de ;
  skos:prefLabel "Natural gas"@en, "Erdgas"@de ;
  a zbwext:Descriptor, skos:Concept ;
  skos:narrower <http://zbw.eu/stw/descriptor/30193-1> .

wd:Q564726
  rdfs:label "shale gas"@en, "Shale Gas"@de, "Schiefergas"@de ;
  skos:prefLabel "shale gas"@en, "Schiefergas"@de ;
  skos:exactMatch <http://zbw.eu/stw/descriptor/30193-1> .

zbwext:Descriptor
  rdfs:label "Descriptor"@en ;
  a owl:Class .

skos:inScheme
  skos:definition "Relates a resource (for example a concept) to a concept scheme in which it is included."@en ;
  rdfs:label "is in scheme"@en .

<http://dbpedia.org/resource/Shale_gas>
  rdfs:label "Shale gas"@en, "Schiefergas"@de ;
  skos:prefLabel "Shale gas"@en, "Schiefergas"@de ;
  skos:exactMatch <http://zbw.eu/stw/descriptor/30193-1> .

<http://zbw.eu/stw/descriptor/30193-1>
  a zbwext:Descriptor, skos:Concept ;
  dc:isPartOf <http://zbw.eu/stw> ;
  skos:exactMatch gnd:7751971-1, wd:Q564726, <http://dbpedia.org/resource/Shale_gas> ;
  ns0:gvkppn "168222385X" ;
  skos:broader <http://zbw.eu/stw/descriptor/14196-1>, <http://zbw.eu/stw/thsys/70418> ;
  skos:related <http://zbw.eu/stw/descriptor/12983-2>, <http://zbw.eu/stw/descriptor/30191-5>, <http://zbw.eu/stw/descriptor/14237-6> ;
  skos:prefLabel "Schiefergas"@de, "Shale gas"@en ;
  rdfs:label "Shale gas"@en, "Schiefergas"@de ;
  skos:inScheme <http://zbw.eu/stw> .

gnd:7751971-1
  rdfs:label "shale gas"@de, "Schiefergas"@de ;
  skos:prefLabel "Schiefergas"@de ;
  skos:exactMatch <http://zbw.eu/stw/descriptor/30193-1> .

skos:prefLabel
  rdfs:subPropertyOf rdfs:label ;
  skos:definition "The preferred lexical label for a resource, in a given language."@en ;
  rdfs:comment """skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise
      disjoint properties."""@en, "The range of skos:prefLabel is the class of RDF plain literals."@en, "A resource has no more than one value of skos:prefLabel per language tag."@en ;
  rdfs:label "preferred label"@en .

skos:Concept
  rdfs:label "Concept"@en ;
  a owl:Class .

<http://zbw.eu/stw/descriptor/12983-2>
  rdfs:label "Natural gas production"@en, "Erdgasgewinnung"@de, "Erdgasförderung"@de, "Erdgasbohrung"@de ;
  skos:prefLabel "Natural gas production"@en, "Erdgasgewinnung"@de ;
  a zbwext:Descriptor, skos:Concept ;
  skos:related <http://zbw.eu/stw/descriptor/30193-1> .

skos:related
  rdfs:subPropertyOf skos:semanticRelation ;
  skos:definition "Relates a concept to a concept with which there is an associative semantic relationship."@en ;
  rdfs:comment "skos:related is disjoint with skos:broaderTransitive"@en ;
  rdfs:label "has related"@en .

<http://zbw.eu/stw/thsys/70418>
  a skos:Concept, zbwext:Thsys ;
  rdfs:label "P.05  Bergbauerzeugnisse"@de, "Bergbauerzeugnisse"@de, "Mining commodities"@en, "P.05  Mining commodities"@en ;
  skos:prefLabel "P.05  Mining commodities"@en, "P.05  Bergbauerzeugnisse"@de ;
  skos:notation "P.05" ;
  skos:narrower <http://zbw.eu/stw/descriptor/30193-1> .

<http://zbw.eu/stw/descriptor/14237-6>
  skos:prefLabel "Dimension stone"@en, "Naturstein"@de ;
  rdfs:label "Werkstein"@de, "Sandstein"@de, "Calciumcarbonat"@de, "Kalk"@de, "Kalkstein"@de, "Schiefer"@de, "Naturstein"@de, "Granit"@de, "Marmor"@de, "Limestone"@en, "Dimension stone"@en, "Naturwerkstein"@de ;
  a skos:Concept, zbwext:Descriptor ;
  skos:related <http://zbw.eu/stw/descriptor/30193-1> .

skos:broader
  rdfs:subPropertyOf skos:broaderTransitive ;
  skos:definition "Relates a concept to a concept that is more general in meaning."@en ;
  rdfs:comment "Broader concepts are typically rendered as parents in a concept hierarchy (tree)."@en ;
  rdfs:label "has broader"@en .