About: http://webisa.webdatacommons.org/269266878

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	In VoIP, protocols such as Session Initiation Protocol (SIP), Media Gateway Control Protocol (MGCP), and H.323 are defined.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com