About: http://webisa.webdatacommons.org/391272667

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	If a fault is detected (for instance a cable breaks), a warning tone or light or other signal is switched on for about 3 seconds.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com