About: http://webisa.webdatacommons.org/170384643

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 load varying function is performed in the prior art by machines comprising such resistance devices as springs and, more popularly, pulleys and weights.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es