About: http://webisa.webdatacommons.org/269381139

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	I DO know that some axe grinders/competitors, with stone for a long time with a very fine stone to harden the edge, especially on axes that will be used on hard woods (generally rolled edges).
http://www.w3.org/ns/prov#wasQuotedFrom	bladeforums.com