About: http://webisa.webdatacommons.org/61971987

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	The common definition of a perpetual motion machine is a machine that produces more energy than it consumes.
http://www.w3.org/ns/prov#wasQuotedFrom	berkeley.edu