MPEG-7 Schema Search Engine

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termReferenceType

  <simpleType name="termReferenceType">
    <union>
      <simpleType>
        <restriction base="NMTOKEN">
          <whiteSpace value="collapse"/>
          <pattern value=":[^:]+:[^:]+"/>
        </restriction>
      </simpleType>
      <simpleType>
        <restriction base="anyURI"/>
      </simpleType>
    </union>
  </simpleType>