About: http://webisa.webdatacommons.org/32813116

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	Actually, the wheel and axle and the pulley are different forms of lever, and the wedge and the screw are different forms of the inclined plane.
http://www.w3.org/ns/prov#wasQuotedFrom	scienceray.com