About: http://webisa.webdatacommons.org/99245847

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	??? Two points, p1 and p2, such as and , lying in the plane, and a Vector v1, such as , the direction of which lies within the plane.
http://www.w3.org/ns/prov#wasQuotedFrom	maplesoft.com