ecbro:Problem
  a owl:Class ;
  rdfs:subClassOf ecbro:AttributeValue, ecbro:eCBRoConcept ;
  rdfs:label "Case Problem"@en ;
  rdfs:comment "Defines the problem the case solved."@en ;
  dc:description "Represents the problem or challenge addressed and solved by the case."@en ;
  rdfs:isDefinedBy <http://www.ecbro.org/reference/#> .