About: http://webisa.webdatacommons.org/211256652

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	When the inner control point vector Vs is Vs=0, the surface is a plane, so in other words, the inner control point vector Vs controls the convexity/concavity of the surface near the median point.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com