About: http://webisa.webdatacommons.org/166066614

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 concept of a perpetual motion machine is an enticing one: Imagine a machine that runs continuously without requiring any external energy???a feat that could make refueling vehicles a thing of the past.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org