About: http://webisa.webdatacommons.org/17960188

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	To remove the smear and also to remove glass fiber fragments, acids such as sulfuric acid and hydrofluoric acid are frequently used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com