About: http://webisa.webdatacommons.org/90225836

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	In principal, amorphous silica is less abrasive than silica and other harder materials used in the prior art.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au