title: query XML file and loop through only nodes that have specific element names and attribute values
body: <p>I have one xml file, which is 16.4MB in size. I need to select and print only the <code>programme</code> nodes that have a channel attribute value of:</p>
  
  <blockquote>
    <p>BHT 1</p>
  </blockquote>
  
  <p>here is xml file url:
        <a href="http://epg.com/epg.xml" rel="nofollow">http://epg.com/epg.xml</a></p>