About: http://webisa.webdatacommons.org/115328595

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	Further, when actuator pairs are used, one of the actuators of a pair can be replaced by a spring, or other energy storage device such as a weight subject to gravity.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk