About: http://webisa.webdatacommons.org/426880417

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	present invention is a further improvement because the separate functions performed by retractable and non-retractable sensors fire readily accomplished without requiring different sensor hardware.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com