<xs:element maxOccurs="1" minOccurs="0" name="label" type="xs:string">
  <xs:annotation>
    <xs:documentation xml:lang="en-us">Descriptive subject line for this group of CMCs.</xs:documentation>
    <xs:appinfo>
      <rdf:Description rdf:about="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ClusterType/label">
        <rdfs:domain rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ClusterType"/>
        <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
        <rdfs:label xml:lang="en-us">label</rdfs:label>
        <rdf:type rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
        <rdfs:comment xml:lang="en-us">Descriptive subject line for this group of CMCs.</rdfs:comment>
      </rdf:Description>
    </xs:appinfo>
  </xs:annotation>
</xs:element>

<xs:complexType name="ClusterType">
  <xs:annotation>
    <xs:documentation xml:lang="en-us">The grouping component, which may contain further instances of itself or any eXtended datatype, in an ordered list. This can serve as the root component for arbitrarily complex structures.</xs:documentation>
    <xs:appinfo>
      <rdf:Description rdf:about="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ClusterType">
        <rdfs:isDefinedBy rdf:resource="https://semanticdatacharter.com/docs/sdc4/sdc4_xsd_Complex_Type_sdc4_ClusterType.html#ClusterType"/>
        <rdfs:subClassOf rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ItemType"/>
        <rdfs:label xml:lang="en-us">ClusterType</rdfs:label>
        <rdf:type rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4/CMC"/>
        <rdfs:comment xml:lang="en-us">The grouping component, which may contain further instances of itself or any eXtended datatype, in an ordered list. This can serve as the root component for arbitrarily complex structures.</rdfs:comment>
      </rdf:Description>
    </xs:appinfo>
  </xs:annotation>
  <xs:complexContent>
    <xs:extension base="sdc4:ItemType">
      <xs:sequence>
        <xs:element maxOccurs="1" minOccurs="0" name="label" type="xs:string">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">Descriptive subject line for this group of CMCs.</xs:documentation>
            <xs:appinfo>
              <rdf:Description rdf:about="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ClusterType/label">
                <rdfs:domain rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ClusterType"/>
                <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
                <rdfs:label xml:lang="en-us">label</rdfs:label>
                <rdf:type rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
                <rdfs:comment xml:lang="en-us">Descriptive subject line for this group of CMCs.</rdfs:comment>
              </rdf:Description>
            </xs:appinfo>
          </xs:annotation>
        </xs:element>
        <xs:element maxOccurs="unbounded" minOccurs="0" ref="sdc4:Items">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">List of ItemTypes which may be XdAdapterTypes and/or ClusterTypes.</xs:documentation>
            <xs:appinfo>
              <rdf:Description rdf:about="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ClusterType/Items">
                <rdfs:domain rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ClusterType"/>
                <rdfs:range rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ItemType"/>
                <rdfs:label xml:lang="en-us">items</rdfs:label>
                <rdf:type rdf:resource="https://semanticdatacharter.com/ns/sdc4/sdc4.xsd#ItemType"/>
                <rdfs:comment xml:lang="en-us">List of ItemTypes which may be XdAdapterTypes and/or ClusterTypes.</rdfs:comment>
              </rdf:Description>
            </xs:appinfo>
          </xs:annotation>
        </xs:element>
      </xs:sequence>
    </xs:extension>
  </xs:complexContent>
</xs:complexType>