@prefix theia_ozcar_thesaurus: <https://w3id.org/ozcar-theia/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

theia_ozcar_thesaurus:c_c2c513c5
  skos:narrower theia_ozcar_thesaurus:c_030ea540 ;
  a skos:Concept ;
  skos:prefLabel "Chemical entity"@en .

<http://www.eionet.europa.eu/gemet/concept/6485> skos:exactMatch theia_ozcar_thesaurus:c_030ea540 .
theia_ozcar_thesaurus:c_030ea540
  a skos:Concept, <https://w3id.org/iadopt/ont/Entity> ;
  skos:definition "[ChEBI] A biphenyl compound containing between 2 and 10 chlorine atoms attached to the two benzene rings."@en, "[Wikipedia] A polychlorinated biphenyl (PCB) is an organic chlorine compound with the formula C12H10−xClx. Polychlorinated biphenyls were once widely deployed as dielectric and coolant fluids in electrical apparatus, carbonless copy paper and in heat transfer fluids.Because of their longevity, PCBs are still widely in use, even though their manufacture has declined drastically since the 1960s, when a host of problems were identified. With the discovery of PCBs' environmental toxicity, and classification as persistent organic pollutants, their production was banned by United States federal law in 1978, and by the Stockholm Convention on Persistent Organic Pollutants in 2001. The International Agency for Research on Cancer (IARC), rendered PCBs as definite carcinogens in humans. According to the U.S. Environmental Protection Agency (EPA), PCBs cause cancer in animals and are probable human carcinogens. Many rivers and buildings, including schools, parks, and other sites, are contaminated with PCBs and there has been contamination of food supplies with the substances. Some PCBs share a structural similarity and toxic mode of action with dioxins. Other toxic effects such as endocrine disruption (notably blocking of thyroid system functioning) and neurotoxicity are known.The bromine analogues of PCBs are polybrominated biphenyls (PBBs), which have analogous applications and environmental concerns. An estimated 1.2 million tons have been produced globally. Though the federal ban was enforced by the EPA as of 1979, PCBs continued to create health problems in later years through their continued presence in soil and sediment, and from products which were made before 1979. In 1988, Tanabe estimated 370,000 tons were in the environment globally and 780,000 tons were present in products, landfills and dumps or kept in storage."@en ;
  skos:inScheme theia_ozcar_thesaurus: ;
  skos:prefLabel "Polychlorobiphenyl"@en ;
  skos:altLabel "PCB"@en ;
  skos:broader theia_ozcar_thesaurus:c_c2c513c5 ;
  skos:exactMatch <http://www.eionet.europa.eu/gemet/concept/6485> ;
  dc:created "2022-02-07T17:00:00"^^xsd:dateTime .

rdf:type
  rdfs:label "type" ;
  rdfs:comment "The subject is an instance of a class." .

skos:Concept
  a owl:Class ;
  rdfs:label "Concept"@en, "SKOS Concept"@en .

<https://w3id.org/iadopt/ont/Entity>
  a owl:Class ;
  rdfs:label "Entity" .

skos:definition
  rdfs:label "definition"@en ;
  skos:definition "A statement or formal explanation of the meaning of a concept."@en ;
  rdfs:subPropertyOf skos:note .

skos:inScheme
  rdfs:label "is in scheme"@en ;
  skos:definition "Relates a resource (for example a concept) to a concept scheme in which it is included."@en .

theia_ozcar_thesaurus: a owl:Ontology, skos:ConceptScheme .
skos:prefLabel
  rdfs:label "preferred label"@en ;
  rdfs:comment "A resource has no more than one value of skos:prefLabel per language tag, and no more than one value of skos:prefLabel without language tag."@en, "The range of skos:prefLabel is the class of RDF plain literals."@en, """skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise
      disjoint properties."""@en ;
  skos:definition "The preferred lexical label for a resource, in a given language."@en ;
  rdfs:subPropertyOf rdfs:label .

skos:altLabel
  rdfs:label "alternative label"@en ;
  rdfs:comment "The range of skos:altLabel is the class of RDF plain literals."@en, "skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties."@en ;
  skos:definition "An alternative lexical label for a resource."@en ;
  rdfs:subPropertyOf rdfs:label .

skos:broader
  rdfs:label "has broader"@en ;
  rdfs:comment "Broader concepts are typically rendered as parents in a concept hierarchy (tree)."@en ;
  skos:definition "Relates a concept to a concept that is more general in meaning."@en ;
  rdfs:subPropertyOf skos:broaderTransitive .

skos:exactMatch
  rdfs:label "has exact match"@en ;
  rdfs:comment "skos:exactMatch is disjoint with each of the properties skos:broadMatch and skos:relatedMatch."@en ;
  skos:definition "skos:exactMatch is used to link two concepts, indicating a high degree of confidence that the concepts can be used interchangeably across a wide range of information retrieval applications. skos:exactMatch is a transitive property, and is a sub-property of skos:closeMatch."@en ;
  rdfs:subPropertyOf skos:closeMatch .