_:vb131850	<http://www.w3.org/2006/http#fieldName>	<http://www.w3.org/2006/http-header#upgrade> .
_:vb131850	<http://www.w3.org/2006/http#fieldValue>	_:vb131851 .
_:vb131851	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#HeaderElement> .
_:vb131851	<http://www.w3.org/2006/http#elementName>	"h2,h2c" .
_:vb131850	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/http#MessageHeader> .