error4.xml



<wakhok:document xmlns:wakhok="http://www.wakhok.ac.jp/public"
                 xmlns:tatsuo="http://www.wakhok.ac.jp/tatsuo">
<wakhok:title>Java and XML</wakhok:title>
Let's begin, now!
<wakhok:image source="java.png" width="512" height="400"/>
I am an elephant.
<fujiki:image source="elephant.png" width="64" height="64"/>
</wakhok:document>