About: http://webisa.webdatacommons.org/210901429

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	Coal is mostly used to generate electricity, and to produce 1 joule of electricity, you need to extract 3 joules of energy from coal.
http://www.w3.org/ns/prov#wasQuotedFrom	permanentlyindignant.com