About: http://webisa.webdatacommons.org/299882339

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	Scratch test Be sure that all scale and other surface impurities have been removed before scratch testing.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net