title: Select more then one node from XML using LINQ
body: <p>I have such XML</p>
  
  <pre><code>&lt;root&gt;
      &lt;content&gt;
          ....
      &lt;/content&gt;
      &lt;index&gt;
          ....
      &lt;/index&gt;
      &lt;keywords&gt;
          ....
      &lt;/keywords&gt;
  &lt;/root&gt;
  </code></pre>
  
  <p>But I need to select just  and  nodes.</p>
  
  <pre><code>&lt;content&gt;
      ....
  &lt;/content&gt;
  &lt;index&gt;
      ....
  &lt;/index&gt;
  </code></pre>
  
  <p>I found out how to select just one node.</p>
  
  <pre><code>XElement Content = new XElement("content", from el in xml.Elements() select el.Element("content").Elements());
  </code></pre>
  
  <p>How can I get both nodes?</p>