About: http://webisa.webdatacommons.org/35761918

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	Currently, in addition to the flywheel and pneumatic systems noted above, such apparatus are powered electrically, or hydraulically, by motors or solenoids, for example, by internal combustion devices, springs or other devices.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com