_:vb54220	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#MessageHeader> .
_:vb54221	<http://www.w3.org/2006/http#elementName>	"Fri, 01 Nov 2019 13:36:32 GMT" .
_:vb54221	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#HeaderElement> .
_:vb54220	<http://www.w3.org/2006/http#fieldValue>	_:vb54221 .
_:vb54220	<http://www.w3.org/2006/http#fieldName>	<http://www.w3.org/2006/http-header#if-modified-since> .