About: http://webisa.webdatacommons.org/396522371

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	The display of the first visual warning and audible alert are maintained for a first predetermined period of time, such as twelve seconds.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com