About: http://webisa.webdatacommons.org/291433139

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	A selector member may be provided to selectively engage or disengage one or more of the lead screws, such as by engaging and disengaging the gear or roller systems interposed between the actuator knob and the lead screws.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com