About: http://webisa.webdatacommons.org/298598193

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	phantom, which can in turn be related to other reference frames by appropriate transformations, such as the reference frame of a medical treatment device or any other system utilizing data from the projection system.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com