About: http://webisa.webdatacommons.org/179509780

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	Surely they were aware of basic materials such as wood, coal, gas or oil burned to produce heat and kinetic energy.
http://www.w3.org/ns/prov#wasQuotedFrom	fee.org