About: http://webisa.webdatacommons.org/99627858

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	Because of the present needs of commercial users, e.g. prisons, emphasis has been placed herein on the use of the invention to detect attempts to initiate three-way calls by the called party.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com