@prefix rdf: . @prefix bibo: . rdf:type bibo:Document . @prefix xsd: . @prefix dcterms: . dcterms:created "1987-07-01"^^xsd:date ; dcterms:modified "2023-06-13T06:04:19"^^xsd:dateTime . @prefix foaf: . @prefix ns5: . foaf:primaryTopic ns5:id . @prefix ns6: . dcterms:creator ns6:id ; dcterms:identifier "028646436" .