@prefix rdf: . @prefix xsd: . @prefix dcterms: . @prefix skos: . @prefix rdfs: . @prefix api: . @prefix foaf: . skos:related . a skos:Concept , rdfs:Resource ; dcterms:contributor ; dcterms:modified "2020-10-26T19:00:57.650Z"^^xsd:dateTime ; skos:altLabel "OB-type stars"@en ; skos:broader , ; skos:definition "A collective designation for massive O and B stars."@en ; skos:narrower ; skos:prefLabel "OB stars"@en ; skos:related . skos:narrower . skos:narrower . skos:broader . a api:ItemEndpoint , api:Page ; api:definition ; api:extendedMetadataVersion ; foaf:primaryTopic .