About: http://webisa.webdatacommons.org/289561264

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	So the origin is a point which has both a horizontal and a vertical tangent.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com