_:vb73683	<http://www.w3.org/2006/http#elementName>	"Fri, 08 Nov 2019 23:21:37 GMT" .
_:vb73682	<http://www.w3.org/2006/http#fieldValue>	_:vb73683 .
_:vb73682	<http://www.w3.org/2006/http#fieldName>	<http://www.w3.org/2006/http-header#if-modified-since> .
_:vb73683	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#HeaderElement> .
_:vb73682	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#MessageHeader> .