result/XInclude/red.xml

<?xml version="1.0" encoding="UTF-8"?>
<book xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink">
  <chapter>
     <para xml:id="t100">Introduction</para>
  </chapter>
  <chapter>
     <para xml:id="t100">Introduction</para>
  </chapter>
</book>