About: http://webisa.webdatacommons.org/335706532

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	Such tracking can be performed using any mechanism, such as a mirror, a pan-tilt mounting, and/or the like, combined with a control system that provides an estimated speed of rail wheel 60 across the field of view.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com