<sdc4:UNC xmlns:sdc4="https://semanticdatacharter.com/ns/sdc4/">
  <ev-name>{1,1}</ev-name>
</sdc4:UNC>

<xs:element name="UNC" substitutionGroup="sdc4:ExceptionalValue" type="sdc4:UNCType">
  <xs:annotation>
    <xs:appinfo>
      <rdf:Description rdf:about="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#UNC">
        <rdfs:subClassOf rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ExceptionalValue"/>
        <sdc4:isCMSOf rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#UNCType"/>
        <rdf:type rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4/CMS"/>
      </rdf:Description>
    </xs:appinfo>
  </xs:annotation>
</xs:element>