About: http://webisa.webdatacommons.org/366787653

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	In an alternative embodiment, the guide tracks can incorporate a mechanism such as a motor (not shown) and a lead screw (not shown) for selectively adjusting the inclination of the guide tracks.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com