About: http://webisa.webdatacommons.org/375449845

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	When weather forecasters believe that a tornado or other extreme weather is imminent, radio transmitters in the affected areas will automatically broadcast a special tone on all channels to alert listeners so they can take cover.
http://www.w3.org/ns/prov#wasQuotedFrom	newscientist.com