#data
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
  <!---->abc<!---->
</rdf:RDF>
#triples
#errors
/RDF/"abc";character not allowed;;;m
#nonrdf
/RDF/"abc"
#attrs
/RDF/@rdf common

#data
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
  <?hoge?>
</rdf:RDF>
#triples
#errors
#nonrdf
/RDF/<?hoge?>
#attrs
/RDF/@rdf common