About: http://webisa.webdatacommons.org/19609534

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	For this reason, compensation lens 138 is made movable, for example, by attaching compensation lens 138 to a driving mechanism, such as a piezoelectric actuator (e.g. a lead-zirconium titanium) or by a micro-step motor.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com