@prefix rdfs: . @prefix owl: . @prefix gacs: . @prefix rdf: . @prefix dc: . @prefix skos: . rdfs:label "Concept definition"@en ; a owl:Class . gacs:def_91542b81 rdf:value "The energy in the form of radiation emitted by a radioactive substance."@en ; dc:source , ; a . gacs:C7562 skos:definition gacs:def_91542b81 .