About: http://webisa.webdatacommons.org/439108187

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	As described above, the warning device is one or more of an audible indicator, a visual indicator such as a display or other warning device.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk