About: http://webisa.webdatacommons.org/271609599

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	like other ways of getting work done, which generally require highly concentrated energy sources, human labor is fueled by food, which is a form of solar energy.
http://www.w3.org/ns/prov#wasQuotedFrom	energybulletin.net