About: http://webisa.webdatacommons.org/6673969

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 the illustrated embodiment, the surfaces S14, S16 are planar and perpendicular to axes A2, A3, but in other embodiments, different shapes may be used, e.g. convex, concave or irregular.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es