_:vb90939	<http://www.w3.org/2006/http#fieldName>	<http://www.w3.org/2006/http-header#if-modified-since> .
_:vb90940	<http://www.w3.org/2006/http#elementName>	"Wed, 13 Nov 2019 02:17:06 GMT" .
_:vb90939	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#MessageHeader> .
_:vb90940	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#HeaderElement> .
_:vb90939	<http://www.w3.org/2006/http#fieldValue>	_:vb90940 .