About: http://webisa.webdatacommons.org/429031477

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	??(x,y)=a+b.x+c.y In three dimensions one needs four points, i.e. the triangle becomes a tetrahedron.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com