@prefix rdfs: . @prefix isac: . @prefix isao: . @prefix skos: . = { isac:general_problem_ rdfs:label "general problem" ; isao:hasHead "problem" ; isao:hasPreModifier "general" . } = { isac:general_problem_ skos:broader isac:_need_ . } = { isac:general_problem_ skos:broader isac:_problem_ . }