About: http://webisa.webdatacommons.org/340781198

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	Here, impurities such as carbide and the like which stuck on the surface can be removed by cleaning and so on according to demands.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com