sub:assertion {
  sub:get-classes-of-ontology-version dct:description "This query returns all classes that are part of a given version of an ontology." ;
    dct:license <http://www.apache.org/licenses/LICENSE-2.0> ;
    a <https://w3id.org/kpxl/grlc/grlc-query> ;
    rdfs:label "Get the classes of an ontology version" ;
    <https://w3id.org/kpxl/grlc/endpoint> <https://w3id.org/np/l/nanopub-query-1.1/repo/full> ;
    <https://w3id.org/kpxl/grlc/sparql> """prefix owl: <http://www.w3.org/2002/07/owl#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix dct: <http://purl.org/dc/terms/>
prefix np: <http://www.nanopub.org/nschema#>
prefix npa: <http://purl.org/nanopub/admin/>
prefix npx: <http://purl.org/nanopub/x/>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix gen: <https://w3id.org/kpxl/gen/terms/>

select distinct ?class ?label (?definition as ?description) (?termNp as ?np) where {
  graph npa:graph {
    ?_ontologyVersionNp_iri npx:introduces ?ontologyVersion .
    ?_ontologyVersionNp_iri np:hasAssertion ?ontologyVersionNpA .
  }
  graph ?ontologyVersionNpA {
    ?ontologyVersion a owl:Ontology .
    ?ontologyVersion gen:hasContentIndex ?contentIndex .
  }
  graph npa:graph {
    ?contentIndex np:hasAssertion ?contentIndexA .
  }
  graph ?contentIndexA {
    ?contentIndex npx:includesElement ?termNp .
  }
  graph npa:graph {
  }
  graph npa:graph {
    ?termNp dct:created ?date .
    ?termNp npx:introduces ?class .
    ?termNp np:hasAssertion ?termNpA .
  }
  graph ?termNpA {
    optional { ?class rdfs:label ?label . }
    optional { ?class skos:definition ?definition . }
  }
}
order by ?label""" .
}