gistfile1.xml

<mxml:xquery-transformer>
  <mxml:xquery-text>
    <![CDATA[
      xquery version "3.0";
        declare variable $document external;
        for $n in 1 to 10
          group by $mod := $n mod 2
          return
            if ($mod = 0) then
              <even>{$n}</even>
            else
              <odd>{$n}</odd>
      ]]>
  </mxml:xquery-text>
</mxml:xquery-transformer>