@prefix addterms: <https://w3id.org/zpid/vocabs/addterms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

addterms:TestTheory
  skos:prefLabel "Test Theory"@en, "Testtheorie"@de ;
  a skos:Concept .

<https://w3id.org/zpid/vocabs/terms/09335>
  skos:narrowMatch addterms:TestTheory ;
  skos:narrower addterms:TestTheory .