About: http://webisa.webdatacommons.org/41593853

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	An area such as a hallway or a stairway may be illuminated during a power outage by a conventional emergency lighting system which generally consists of a light that is powered by a rechargeable battery.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com