chromium/third_party/blink/web_tests/css3/selectors3/xml/css3-modsel-22.xml

<?xml-stylesheet href="css3-modsel-22.css" type="text/css"?>
<test>
<ul xmlns="http://www.w3.org/1999/xhtml">
  <li lang="en-GB">This list item should be green because its language is
        British English</li>
  <li lang="en-GB-wa">This list item should be green because its language
        is British English (Wales)</li>
</ul>
<ol xmlns="http://www.w3.org/1999/xhtml">
  <li lang="en-US">This list item should NOT be green because its language
       is US English</li>
  <li lang="fr">This list item should NOT be green because its language is
       French</li>
</ol>
</test>