About: http://webisa.webdatacommons.org/401895648

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	Third, if the message is an acknowledgement that a previous communication has been received, generally the acknowledgement will be forwarded to the Super Peers for later forwarding to the recipient.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es