About: http://webisa.webdatacommons.org/147252948

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	The convex portion is obtained by removing a surface portion other than a central surface portion by several millimeters.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com