About: http://webisa.webdatacommons.org/123471779

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	Impurities such as but not limited to oxygen or carbon contamination can be reduced and other incorporation such as H can be effected.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com