About: http://webisa.webdatacommons.org/253855522

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	Powdered glass or other solid scattering or dispersing materials, such as titanium oxide, zinc sulphide or CaCO3 may be generally added as the scattering material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca