About: http://webisa.webdatacommons.org/103441086

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	In addition to water vapor, wellhead gas contains impurities such as carbon dioxide, nitrogen, hydrogen sulfide, helium, oxygen and other inert components.
http://www.w3.org/ns/prov#wasQuotedFrom	dailystocks.com