@prefix skos: . @prefix isac: . @prefix rdfs: . @prefix isao: . = { isac:public_activity_ skos:broader isac:_activity_ . } = { isac:public_activity_ rdfs:label "public activity" ; isao:hasHead "activity" ; isao:hasPreModifier "public" . } = { isac:public_activity_ skos:broader isac:_purpose_ . }