About: http://webisa.webdatacommons.org/413517068

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	Alternately, hydraulic force supplied by water or oil, pneumatic force supplied by air or other compressed gasses, or electric force supplied by motors or solenoids may be substituted for or combined with the cams and/or levers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com