About: http://webisa.webdatacommons.org/87961401

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	Since it must be processed using the coordinate data of a control point vector P00 which is common for four terms, there is a problem that its calculation processing is complicated comparing to the surrounding quadrilateral patches.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com