About: http://webisa.webdatacommons.org/209099390

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	The hydrocarbons used in this treatment step should be relatively free of impurities, preferably completely free of impurities, such as oxygen compounds, sulfur compounds, and water.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es