<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<p>
You should see russian quotes because xml:lang takes precedence:
<a href="http://www.w3.org/TR/xhtml1/#C_7">http://www.w3.org/TR/xhtml1/#C_7</a>
</p>
<div xml:lang="ru" lang="en"><q></q></div>
</body>
</html>