@prefix dc: . @prefix rdf: . @prefix rdfs: . @prefix skos: . @prefix xsd: . a skos:Concept; dc:identifier "homoit0001324"; dc:issued "2019-05-14"^^xsd:date; dc:modified "2021-12-08"^^xsd:date; dc:replaces ; rdfs:comment "Official documents issued by governments that ascribe unique numeral identifiers to citizens to track their income and determine retirement benefits. "; skos:broader ; skos:inScheme ; skos:prefLabel "Social security cards", "Social security cards"@en; skos:related , , , , . a skos:ConceptScheme .