title: getting text inside <p> before and after <strong>
body: <p>Given the example below, how to get all the text / flatten the structure?</p>
  
  <pre><code> &lt;div class="container"&gt;
    &lt;p&gt;before_strong
      &lt;strong&gt;inside_strong&lt;/strong&gt;
      after_strong
    &lt;/p&gt;
    &lt;p&gt;just_p&lt;/p&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>I tried with the following ones, but they do not return "after_strong", only "before_strong inside_strong":</p>
  
  <pre><code>//div//p 
  //div/descendant::*
  //div/descendant-or-self::*
  </code></pre>
  
  <p>I'm using this with Python + lxml</p>