_:vb50769	<http://www.w3.org/2007/05/powder-s#describedby>	<http://demo.openlinksw.com/about/id/http/dobraratka.pl/> .
_:vb50769	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#HeaderElement> .
_:vb50769	<http://www.w3.org/2006/http#elementName>	"OpenLink Virtuoso RDF crawler" .