About: http://webisa.webdatacommons.org/240946857

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	Such impurities might result, for example, from partial oxidation of a hydrocarbon or incomplete separation of a hydrocarbon from a reaction mixture or natural source such as petroleum.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com