_:b21643	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	_:b21617 .
_:b21630	<http://www.w3.org/2006/http#elementName>	"Tue, 23 Mar 2021 16:16:29 GMT" .
_:b21617	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#MessageHeader> .
_:b21617	<http://www.w3.org/2006/http#fieldValue>	_:b21630 .
_:b21630	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#HeaderElement> .
_:b21643	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .
_:b21617	<http://www.w3.org/2006/http#fieldName>	<http://www.w3.org/2006/http-header#date> .