About: http://webisa.webdatacommons.org/432582437

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	I used SIP briefly a long time ago and had to refresh myself even, but SIP essentially is a protocol for setting up voice and media streams between devices.
http://www.w3.org/ns/prov#wasQuotedFrom	anandtech.com