About: http://webisa.webdatacommons.org/453425746

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	Such constructions are intended to provide barriers to penetration of stray laser beam power for a prescribed period of time, for example five minutes, within which the fault condition can be expected to be detected.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr