<?xml version="1.0" standalone="no"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
         xmlns:bad="http://www.w3.org/1999/02/22-rdf-syntax-ns#x">

  <!-- Should give an error about above 'bad' namespace declaration -->

</rdf:RDF>
