About: http://webisa.webdatacommons.org/50515872

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	Steel was expensive and was only used where nothing else would do, particularly for the cutting edge of knives, razors, swords, and other tools where a hard sharp edge was needed.
http://www.w3.org/ns/prov#wasQuotedFrom	newworldencyclopedia.org