<xsd:element name="priority">
    <xsd:annotation>
        <xsd:documentation>
      OPTIONAL: The priority of a particular URL relative to other pages
      on the same site. The value for this element is a number between
      0.0 and 1.0 where 0.0 identifies the lowest priority page(s).
      The default priority of a page is 0.5. Priority is used to select
      between pages on your site. Setting a priority of 1.0 for all URLs
      will not help you, as the relative priority of pages on your site
      is what will be considered.
    </xsd:documentation>
    </xsd:annotation>
    <xsd:simpleType>
        <xsd:restriction base="xsd:decimal">
            <xsd:minInclusive value="0.0" />
            <xsd:maxInclusive value="1.0" />
        </xsd:restriction>
    </xsd:simpleType>
</xsd:element>