About: http://webisa.webdatacommons.org/321868229

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	Remove hardened material from machines or machine parts, using abrasives, power and hand tools, jackhammers, sledgehammers, or other equipment.
http://www.w3.org/ns/prov#wasQuotedFrom	onetonline.org