title: Copying part of an xml document to another document using Xdocument
body: <p>I have an xml document which is roughly as follows</p>
  
  <pre><code>&lt;Gov&gt;
      &lt;Head&gt;
          &lt;address&gt;&lt;/address&gt;
          &lt;address&gt;&lt;/address&gt;
      &lt;/Head&gt;
      &lt;Body&gt;
          &lt;line1&gt;&lt;/line1&gt;
          &lt;line1&gt;&lt;/line1&gt;
      &lt;/Body&gt;
  &lt;Gov&gt;
  </code></pre>
  
  <p>I need to copy everything in the body(and including) to a new XDocument. What is the best way to </p>