About: http://webisa.webdatacommons.org/420272087

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 embodiments, contact sensors may be used in devices such as control panels, security systems, or other devices that detect whether objects are in contact.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com