About: http://webisa.webdatacommons.org/186658261

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	Doors that have security devices, especially doors that are specifically used for escape should use fire safety signs to indicate its operating instructions .
http://www.w3.org/ns/prov#wasQuotedFrom	extinguishers.co.uk