@prefix rdf: . @prefix skos: . @prefix rdfs: . @prefix api: . @prefix foaf: . skos:narrowerTransitive . skos:narrower . a skos:Concept , rdfs:Resource ; skos:broader ; skos:broaderTransitive ; skos:inScheme ; skos:notation "091301"@en ; skos:prefLabel "Acoustics and Noise Control (excl. Architectural Acoustics)"@en . a api:ItemEndpoint , api:Page ; api:definition ; api:extendedMetadataVersion ; foaf:primaryTopic .