About: http://webisa.webdatacommons.org/410855430

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	??? If l1 is a line and s a sphere, the output is either NULL, one point of intersections, a list of two points of intersection.
http://www.w3.org/ns/prov#wasQuotedFrom	maplesoft.com