About: http://webisa.webdatacommons.org/25107133

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	composition is purified to remove substantially all oxygen and other trace elements which would contaminate the ribbon being rolled.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com