About: http://webisa.webdatacommons.org/383709006

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	Thus, the components, such as impurities and the like, have been discolored or faded away, thereby rendering the pigment stable.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com