PREFIX dct: PREFIX dc: PREFIX dbr: PREFIX dbo: PREFIX xsd: PREFIX bb: PREFIX vann: PREFIX meta: PREFIX rdf: PREFIX owl: PREFIX yago: PREFIX org: PREFIX ciox: PREFIX purl: PREFIX foaf: PREFIX rdfs: PREFIX it4it: PREFIX it: PREFIX skos: PREFIX schema: PREFIX dbp: PREFIX ob: PREFIX he: PREFIX ov: PREFIX sh: PREFIX sniko: bb:Specialization a meta:EntityType; bb:page "54"^^xsd:positiveInteger; meta:chapter bb:chapter5-3; rdfs:label "Specialization"@en, "تخصص"@fa; rdfs:subClassOf bb:ResearchAndEducationEntityType, bb:UmlAssociation; skos:closeMatch dbr:Specialization; skos:definition "Specializations describe refinement relationships."@en.