title: xpath combined with local-name and arrays
body: <p>I have this and this selects in my xml 'documentNature'</p>
  
  <pre><code>//*[local-name()='documentNature'] 
  </code></pre>
  
  <p>this is returning 2 rows because I have 2 xmls and I would like to return the first one 
  kind this (but this do not work):</p>
  
  <pre><code>//*[local-name()='documentNature'][0]
  </code></pre>
  
  <p>How should I do this ?
  Thanks</p>