About: http://webisa.webdatacommons.org/30737905

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	For searching any headers, such as the subject, Reply-To, Received, etc., the command is simply ???(HEADER ??????)???
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com