About: http://webisa.webdatacommons.org/413387531

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	If the element is a header, as indicated in the XPV_role attribute (step 308), a header flag is raised (step 310).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com