About: http://webisa.webdatacommons.org/428328870

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	Also, a method to control density is needed to render effects such as clouds or smoke, which have a variable density.
http://www.w3.org/ns/prov#wasQuotedFrom	yafaray.org