@prefix ec: <http://www.ebu.ch/metadata/ontologies/ebucoreplus#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

ec:Essence
  a owl:Class ;
  rdfs:subClassOf ec:MediaResource, [
    a owl:Restriction ;
    owl:onProperty ec:hasRelatedPublicationEvent ;
    owl:allValuesFrom ec:PublicationEvent
  ], [
    a owl:Restriction ;
    owl:onProperty ec:isComposedOf ;
    owl:allValuesFrom ec:MediaResource
  ], [
    a owl:Restriction ;
    owl:onProperty ec:readyForPublication ;
    owl:maxQualifiedCardinality "1"^^xsd:nonNegativeInteger ;
    owl:onDataRange xsd:boolean
  ] ;
  dcterms:description "A media resource in the form of a single file or a file package for play-out or publishing, e.g. an audio file for playout on an audio on demand platform; a MXF container for playout; a video file together with additional language tracks and a subtitle file."@en ;
  rdfs:label "Essence"@en ;
  skos:definition "a ec:MediaResource in the form of a single file or a file package for play-out or publishing"@en ;
  skos:example """- a mxf file
- a file package delivered by a camera of a specific brand"""@en .