<rdf:RDF  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
          xmlns:skos="http://www.w3.org/2004/02/skos/core#">

  <!--
  Example of a Collection:
  -->
  
  <skos:Concept rdf:about="http://my.example.org/concept#102">
    <skos:prefLabel>Aircraft</skos:prefLabel>
    <skos:narrower>
      <skos:Collection>
        <rdfs:label>Aircraft by function</rdfs:label>
        <skos:member rdf:resource="http://my.example.org/concept#1024"/>
        <skos:member rdf:resource="http://my.example.org/concept#1026"/>
        <skos:member rdf:resource="http://my.example.org/concept#1027"/>
        <skos:member rdf:resource="http://my.example.org/concept#1028"/>
        <skos:member rdf:resource="http://my.example.org/concept#1029"/>
      </skos:Collection>
    </skos:narrower>
  </skos:Concept>
  
  <!--
  Example of nested Collections:
  -->

  <!-- @@TODO -->

  <skos:Concept rdf:about="">
    <skos:prefLabel></skos:prefLabel>
    <skos:narrower>
      <skos:Collection>
        <rdfs:label></rdfs:label>
        <skos:member rdf:resource=""/>
        <skos:member rdf:resource=""/>
        <skos:member>
          <skos:Collection>
            <rdfs:label></rdfs:label>
            <skos:member rdf:resource=""/>
            <skos:member rdf:resource=""/>
            <skos:member rdf:resource=""/>
            <skos:member rdf:resource=""/>
          </skos:Collection>
        </skos:member>
        <skos:member rdf:resource=""/>
      </skos:Collection>
    </skos:narrower>
  </skos:Concept>
  
</rdf:RDF>