About: http://webisa.webdatacommons.org/292664255

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	A proppant, such as course sand or sintered bauxite, is often added to the fracturing fluid to increase its effectiveness.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de