About: http://webisa.webdatacommons.org/232813553

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	Others do it because it does sort of give the knife a more rust resistant property once the patina is set.
http://www.w3.org/ns/prov#wasQuotedFrom	bladeforums.com