@prefix rdf: . @prefix xsd: . @prefix dcterms: . @prefix skos: . @prefix rdfs: . @prefix api: . @prefix foaf: . skos:broader . a skos:Concept , rdfs:Resource ; dcterms:contributor ; dcterms:modified "2020-11-17T19:04:05.986Z"^^xsd:dateTime ; skos:altLabel "Oort Cloud"@en , "Öpik–Oort cloud"@en , "Opik-Oort Cloud"@en ; skos:broader , ; skos:definition "A huge theoretical cloud of comets surrounding the Sun between about 50,000 and 100,000 astronomical units and thought to be the reservoir of long-period comets entering the inner solar system."@en ; skos:narrower ; skos:prefLabel "Oort cloud"@en . skos:narrower . skos:narrower . a api:ItemEndpoint , api:Page ; api:definition ; api:extendedMetadataVersion ; foaf:primaryTopic .