About: http://webisa.webdatacommons.org/437805988

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	It may be selected according to factors such as ash and sulfur content, tar, plasticity, and volatility.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.org