<!DOCTYPE html>
<html prefix="ex: http://example.org/terms#">
<head> 
   <meta charset=utf-8>
   <title>Test 0254</title> 
   <base href="http://example.org/"/> 
</head> 
<body lang="en"> 
   <p property="ex:prop" datatype="">A <strong>plain literal</strong> with a lang tag.</p> 
</body>
</html>