@prefix rdf: . @prefix xsd: . @prefix dcterms: . @prefix skos: . @prefix rdfs: . @prefix api: . @prefix foaf: . skos:broader . skos:broader . skos:broader . skos:narrower . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . skos:broader . a rdfs:Resource , skos:Concept ; dcterms:contributor ; dcterms:modified "2018-08-29T15:13:49Z"^^xsd:dateTime ; skos:altLabel "Observation methods"@en , "Methods"@en ; skos:broader ; skos:narrower , , , , , , , , , , , , , , , ; skos:prefLabel "Astronomical methods"@en . a api:ItemEndpoint , api:Page ; api:definition ; api:extendedMetadataVersion ; foaf:primaryTopic .