About: http://webisa.webdatacommons.org/181178875

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	Thus, upon machining, such items, including nuts, bolts, screws and other fasteners, often are coated with a light oil to prevent oxygen from contacting the parts' surfaces.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es