title: fetching span value from html document
body: <p>I have following xpath fetched using firefox xpath plugin</p>
  
  <pre><code>id('some_id')/x:ul/x:li[4]/x:span
  </code></pre>
  
  <p>using html agility pack I'm able to fetch <code>id('some_id')/x:ul/x:li[4]</code> </p>
  
  <pre><code>htmlDoc.DocumentNode.SelectNodes(@"//div[@id='some_id']/ul/li[4]").FirstOrDefault();
  </code></pre>
  
  <p>but I dont know how to get this span value.</p>
  
  <p><strong>update</strong></p>
  
  <pre><code> &lt;div id="some_id"&gt;
      &lt;ul&gt;
        &lt;li&gt;&lt;li&gt;
        &lt;li&gt;&lt;li&gt;
        &lt;li&gt;&lt;li&gt;
        &lt;li&gt;
           Some text
          &lt;span&gt;text I want to grab&lt;/span&gt;
        &lt;/li&gt;
      &lt;/ul&gt;
      &lt;/div&gt;
  </code></pre>