title: How to handle HTML entity nbsp in XSLT. Without changing the input file
body: <p>I am trying to convert an HTML file into XML file using XSLT (Using <a href="http://www.oxygenxml.com/" rel="nofollow">Oxygen</a> 9.0 for transformation).</p>
  
  <p>When I configure and run the XSLT transformation with the HTML file then Oxygen outputs  </p>
  
  <p><code>The entity 'nbsp' was referenced,but not declared</code>.</p>
  
  <p>My input html file is:</p>
  
  <pre><code>&lt;div&gt;&lt;span&gt;&amp;nbsp;some text&lt;/span&gt;&lt;/div&gt;
  </code></pre>
  
  <p><strong>Note:</strong> I want to know how handle that entity only using the XSLT, I <em>don't</em> want to make any changes to the input file.</p>