About: http://webisa.webdatacommons.org/288118688

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	There are many possible means to provide mass notification that may include public address systems, audible and visual annunciators or personal communication devices such as pagers, radios or PDAs.
http://www.w3.org/ns/prov#wasQuotedFrom	securitysolutions.com