title: What XPath selects the next <tr> after a <tr> containing X?
body: <pre><code>&lt;tr&gt;
   &lt;td&gt;Blah!&lt;/td&gt;
   &lt;td&gt;X&lt;/td&gt; &lt;!-- TR containing X --&gt;
   &lt;td&gt;Woot!&lt;/td&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;Useful Data, contents unknown&lt;/td&gt; &lt;!-- Select this TR --&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;Useless data&lt;/td&gt; &lt;!-- Don't select this or any subsequent TR --&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;More crap I don't want&lt;/td&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;X&lt;/td&gt; &lt;!-- Another X --&gt;
  &lt;/tr&gt;
  &lt;tr&gt;
   &lt;td&gt;Useful&lt;/td&gt; &lt;!-- Do select this one, since previous has X --&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p>What XPath would return the <code>&lt;tr&gt;</code> immediately following the <code>&lt;tr&gt;</code> that contains X?</p>