construct distinct {cs} rdf:type {owl:Ontology},
   {cs} rdfs:comment {cslab}
from {cs} rdf:type {skos:ConceptScheme},
   {cs} dc:title {cslab}

union

construct distinct
   {x} rdf:type {owl:Class},
   {x} rdfs:label {pref},
   {x} rdfs:label {alt},
   {x} rdfs:label {hid},
   {x} rdfs:subClassOf {bc},
   {x} rdfs:seeAlso {rc},
   {x} rdfs:comment {gsn},
   {x} rdfs:comment {hisn}
from {x} rdf:type {skos:Concept},
   [{x} skos:inScheme {cs} dc:title {cslab}],
   [{x} skos:prefLabel {pref}],
   [{x} skos:altLabel {alt}],
   [{x} skos:hiddenLabel {hid}],
   [{x} skos:broader {bc}],
   [{x} skos:related {rc}],
   [{x} skos:scopeNote {gsn}],
   [{x} skos:editorialNote {hisn}]

using namespace
  skos = <http://www.w3.org/2004/02/skos/core#>,
  owl = <http://www.w3.org/2002/07/owl#>,
  dc = <http://purl.org/dc/elements/1.1/>