About: http://webisa.webdatacommons.org/18948524

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	Examples of such diffusers are mineral filling materials, especially CaF2, TiO2, SiO2, CaCO3 or BaSO4, or even organic pigments.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com