About: http://webisa.webdatacommons.org/52748362

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	The whiskers may be formed of such materials as metal oxides, carbides, halides or nitrides, such as silicon carbide, silicon nitride, sapphire (Al2 O3), MgO, MgO-Al2 O3, Fe2 O3, BeO, MoO3, NiO, Cr2 O3, ZnO, potassium titanate, or boron.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es