About: http://webisa.webdatacommons.org/429145777

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	Craig Kolb's Rayshade is written in C, lex and yacc and is an extensible system for creating raytraced images.
http://www.w3.org/ns/prov#wasQuotedFrom	siggraph.org