About: http://webisa.webdatacommons.org/197353484

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	2008-12-8 Release of VPython 5.0 by David Scherer and Bruce Sherwood: opacity, local lights, materials such as wood.
http://www.w3.org/ns/prov#wasQuotedFrom	vpython.org