I'm new in this sphere and i need more information. I couldn't find any information in the Internet. For example now now i use this function `hxs.select('//div[@id="CategoryBreadcrumb"]//text()').extract()` . In this `div` I have `ul` and `li`s with `a`nchors in each `li` but one. I need the text from the `li` that doesn't have `a` tag in it. I'd be thankful if you give any educational links for hxs filtering as well. Thanks in advance!
Here is an example if u cant visualize what i need.

```
<div id='CategoryBreadcrumb'>
<ul>
  <li><a href=#>I dont need</a></li>
  <li><a href=#>I dont need</a></li>
  <li><a href=#>I dont need</a></li>
  <li>Text that i need</li>
</ul>
</div>

```