About: http://webisa.webdatacommons.org/76036472

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	Third and most importantly, the presence of surfactant in the produced emulsion fluids makes it very difficult to recover oil free of impurities such as surfactant and water.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es