How to append the content of doc2.xml by using documen

Hi all,
I have a situation like this:

Source xml:

<book>
	<chapter>
		<section name="01">
			<para pid= "01"> sentance 1 </para>
			<para pid= "01"> sentance 2 </para>
		</section>
		<section name="02">
			<para pid= "02"> sentance 1 </para>
			<para pid= "02"> sentance 2 </para>
			<para pid= "02"> sentance 3 </para>
		</section>
	</chapter>
<book>


doc2.xml:

<notes>
	<note>
		<sectionNote>
			<paraNote pid = "01"> Note 1 </paraNote>
			<paraNote pid= "02"> Note 2 </paraNote>
		</sectionNote>
	</note>
</notes>


now, how do I append notes based on the "pid" of the source xml.  Need to
append only at the end of each <para> group. i.e,

<book>
	<chapter>
		<section name="01">
			<para pid= "01"> sentance 1 </para>
			<para pid= "01"> sentance 2 </para>
			<paraNote pid = "01"> Note 1 </paraNote>
		</section>
		<section name="02">
			<para pid= "02"> sentance 1 </para>
			<para pid= "02"> sentance 2 </para>
			<para pid= "02"> sentance 3 </para>
			<paraNote pid= "02"> Note 2 </paraNote>
		</section>
	</chapter>
<book>


Thanks in advance.
Regards,
Mo


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