ASK WHERE {
	<http://www.w3.org/2006/07/SWD/RDFa/testsuite/xhtml1-testcases/0104.xhtml#interfenestration> <http://www.example.org/size> _:a . 
 	_:a <http://www.w3.org/1999/02/22-rdf-syntax-ns#value> "17" .
 	_:a <http://www.example.org/unit> "character" .
 }
