title: xpath to fetch menu from a node's menu's parent sibling
body: <p>i have an xml structure :</p>
  
  <pre><code>&lt;Pages&gt;          &lt;!--This is the root node--&gt;
  
      &lt;Home&gt;
          &lt;url&gt;...&lt;/url&gt;
          &lt;menu&gt;
              &lt;item&gt;Help&lt;/item&gt;
              &lt;item&gt;About&lt;/item&gt;
              &lt;item&gt;Contact&lt;/item&gt;
          &lt;/menu&gt;
      &lt;/Home&gt;
  
      &lt;Help&gt;               
            &lt;menu&gt;                           &lt;!--i need to select this if its parent(Help) is listed in Home/menu/item above--&gt;
              &lt;item&gt;Business Help&lt;/item&gt;
              &lt;item&gt;Web Help&lt;/item&gt;
              &lt;item&gt;Tour Help&lt;/item&gt;
            &lt;/menu&gt;
      &lt;/Help&gt; 
  
      &lt;About&gt;            
            &lt;menu&gt;                          &lt;!--And Or select this if its parent(About) is listed in Home/menu/item above--&gt;
              &lt;item&gt;About us&lt;/item&gt;
              &lt;item&gt;About our food&lt;/item&gt;
              &lt;item&gt;About our people&lt;/item&gt;
          &lt;/menu&gt;
      &lt;/About&gt;
  
      &lt;Contact&gt;                              &lt;!--And Or select this if its listed in Home/menu/item above--&gt;
            ...
               and so on...
            ...
      &lt;/Contact&gt;
  
  &lt;/Pages&gt;
  </code></pre>
  
  <p>i need an xpath expression that selects the menu child of any page (e.g Help/menu, About/menu)
  that has its menu parent name (page name, e.g Help, About, or Contact) listed in Home/menu/item</p>
  
  <p>any help will be greately appreciated. thanks !</p>