@prefix gacs: . @prefix rdf: . @prefix dc: . @prefix rdfs: . @prefix owl: . @prefix skos: . gacs:def_ddffbf87 rdf:value "The frequency of an event or characteristic without distinguishing between prevalence and incidence."@en ; dc:source ; a . rdfs:label "Concept definition"@en ; a owl:Class . gacs:C16586 skos:definition gacs:def_ddffbf87 .