About: http://webisa.webdatacommons.org/76248133

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 FIG. 13, the target 112 is elliptical, as is the focal point P. It may have other shapes, as well, such as rectangular.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr