About: http://webisa.webdatacommons.org/371552001

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	Liquid enriched in heavier hydrocarbons accumulating in the sump of the column is heated, and the vapor or gaseous phase consisting mainly of methane rises to the top of the column.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com