<http://www.w3.org/2006/http-header>	<http://xmlns.com/foaf/0.1/topic>	_:vb50811454 .
_:vb50811455	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:vb50811454 .
_:vb50811454	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:vb50811453 .
_:vb50811454	<http://www.w3.org/2007/05/powder-s#describedby>	<http://demo.openlinksw.com/about/id/entity/http/www.w3.org/2006/http-header> .
_:vb50811454	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.w3.org/2006/http-header#if-unmodified-since> .