<https://elsst.cessda.eu/id/2/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://www.w3.org/2002/07/owl#Ontology>
<https://thesauri.cessda.eu/elsst-2/en/page/a4bc1a75-2efb-4256-8ee8-c7beec94d1f7?clang=hu>