About: http://webisa.webdatacommons.org/383634841

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 efficient use of primary working materials such as sandpaper, polishing sheets or buffing cloths directly impact user costs.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com