@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix mcr: <https://registry.apicrafter.io/vocab#> .
@prefix dt: <https://registry.apicrafter.io/datatype/> .
@prefix cat: <https://registry.apicrafter.io/category/> .
@prefix country: <https://registry.apicrafter.io/country/> .
@prefix tool: <https://registry.apicrafter.io/tool/> .

dt:cts_urn a skos:Concept ;
    skos:inScheme <https://registry.apicrafter.io/> ;
    skos:notation "cts_urn" ;
    skos:prefLabel "CTS URN (Canonical Text Services)"@en ;
    skos:definition "URN that cites a passage of a text by its canonical reference, used for classical Greek and Latin texts in the Perseus Digital Library, the Homer Multitext and other CITE/CTS projects. It has the form urn:cts:<namespace>:<work>:<passage>. The work part has up to four dot-separated levels: text group, work, version (edition or translation) and exemplar. The passage is a citation such as book.line, a range joined by a hyphen, or a node with a subreference such as @Atreus[1]. The specification requires the colon before an empty passage, but catalogues often omit it, so the regexp accepts both."@en ;
    skos:prefLabel "CTS URN (Canonical Text Services)"@ru ;
    skos:definition "URN для ссылки на место канонического текста, прежде всего античного, по схеме urn:cts:<пространство>:<произведение>:<место>."@ru ;
    skos:broader dt:urn ;
    skos:example "urn:cts:greekLit:tlg0012.tlg001.hmt01:10.1-10.10" ;
    skos:example "urn:cts:greekLit:tlg0012.tlg001.hmt01:10.4@Atreus[1]" ;
    mcr:status "draft" ;
    mcr:isPII false ;
    mcr:classification "identifier" ;
    mcr:regexp "^urn:cts:[A-Za-z0-9_-]+:[A-Za-z0-9_-]+(?:\\.[A-Za-z0-9_-]+){0,3}(?::[^\\s:%/?#]*)?$" ;
    rdfs:seeAlso <https://cite-architecture.github.io/ctsurn_spec/> .