XHTML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:foaf="http://xmlns.com/foaf/0.1/"
	  >
  <head>
		<title>Test 0048</title>    
  </head>
  <body>
  	<div about="http://www.example.org" rel="foaf:knows" instanceof="foaf:Person">
	    <p property="foaf:name">John Doe</p>
   	</div>
  </body>
</html>

Triples (N3 format)


@prefix foaf: <http://xmlns.com/foaf/0.1/>.
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.

 <http://www.example.org> a foaf:Person;
     foaf:knows [ foaf:name "John Doe"].

SPARQL (FAILED)

ASK WHERE {
	<http://www.example.org> <http://xmlns.com/foaf/0.1/knows> _:a .
	_:a <http://xmlns.com/foaf/0.1/name> "John Doe" .
	<http://www.example.org> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
}