<http://www.w3.org/2006/http-header> <http://xmlns.com/foaf/0.1/topic> _:vb50396553 . _:vb50396553 <http://www.w3.org/1999/02/22-rdf-syntax-ns#first> <http://www.w3.org/2006/http-header#pep> . _:vb50396554 <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest> _:vb50396553 . _:vb50396553 <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest> _:vb50396552 . _:vb50396553 <http://www.w3.org/2007/05/powder-s#describedby> <http://demo.openlinksw.com/about/id/entity/http/www.w3.org/2006/http-header> .