About: http://webisa.webdatacommons.org/420810358

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	Mechanical advantage can be less than, equal to, or greater than 1; while efficiency, owing to such losses as friction, is always less than 100% (otherwise a perpetual motion machine would be possible).
http://www.w3.org/ns/prov#wasQuotedFrom	daviddarling.info