About: http://webisa.webdatacommons.org/201205419

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	The method according to claim 2, wherein the first and second request messages are INVITE request messages, and the header field included in the second request message is an ALSO header field specifying the bridge. 4.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com