About: http://webisa.webdatacommons.org/64286107

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	Simultaneously, all impurities such as scale, rust, debris, oils, grinding compounds and other materials are removed as the surface material is dissolved.
http://www.w3.org/ns/prov#wasQuotedFrom	pfonline.com