About: http://webisa.webdatacommons.org/416279375

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	Moreover, oxides such as SiO2, Al2O3 or the like may be included as the filler.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com