title: Can't query a node with xpath query
body: <p>I am having some difficulty querying a node in an xml document. the document is <a href="http://ods.od.nih.gov/api/index.aspx?resourcename=BotanicalBackground&amp;readinglevel=Health%20Professional" rel="nofollow">http://ods.od.nih.gov/api/index.aspx?resourcename=BotanicalBackground&amp;readinglevel=Health%20Professional</a></p>
  
  <p>i am trying to get the text of the first  node.</p>
  
  <p>i have tried these queries and none of them seemed to work.</p>
  
  <pre><code>*[name()='ImageURL']
  //captionedimage[1]
  //Factsheet/RelatedImages/captionedimage[1]/ImageURL/text()
  //RelatedImages/*[1]
  </code></pre>
  
  <p>greatly appreciate any help.</p>