@prefix imp: . @prefix skos: . @prefix dc: . @prefix xsd: . imp:topic skos:prefLabel "Topic"@en ; a skos:Concept ; skos:narrower . a skos:Concept ; skos:broader imp:topic ; dc:modified "2021-08-27T11:25:52.783+01:00"^^xsd:dateTime ; dc:created "2017-01-17T14:15:08.723+00:00"^^xsd:dateTime ; skos:prefLabel "Non-agricultural Pollution"@en ; dc:creator "rjsc" .