About: http://webisa.webdatacommons.org/438444369

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 one embodiment, the controlling means is a microprocessor, and the sensors comprise a real-time clock and a Hall-effect compass.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com