About: http://webisa.webdatacommons.org/1757513

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	A cylinder is a surface generated by a family of all lines parallel to a given line (the generatrix) and passing through a curve in a plane (the directrix).
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org