About: http://webisa.webdatacommons.org/417015240

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	Ideally, the material used will contain between 30% and 80% by weight carbon, the balance being comprised of bonded hydrogen, oxygen and containing water, ash, sulfur, nitrogen and other impurities.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com