About: http://webisa.webdatacommons.org/44789608

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 hard abrasives include such materials as silicon carbine, aluminum oxide, topaz, fused alumina-zirconia, boron nitride, tungsten carbide, and silicon nitride.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com