_:vb51925	<http://www.w3.org/2006/http#fieldValue>	_:vb51926 .
_:vb51925	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#MessageHeader> .
_:vb51925	<http://www.w3.org/2006/http#fieldName>	<http://www.w3.org/2006/http-header#if-modified-since> .
_:vb51926	<http://www.w3.org/2006/http#elementName>	"Tue, 29 Oct 2019 16:29:32 GMT" .
_:vb51926	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#HeaderElement> .