1<a> 2 <xi:include href="b.xml" xmlns:xi="http://www.w3.org/2001/XInclude"> 3 <xi:fallback>There is no b.xml ... </xi:fallback> 4 </xi:include> 5 <xi:include href="c.xml" xmlns:xi="http://www.w3.org/2001/XInclude"> 6 <xi:fallback>There is no c.xml ... </xi:fallback> 7 </xi:include> 8 9</a> 10 11