About: http://webisa.webdatacommons.org/436848792

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	(4) The use of a lifeline is not required if the risk assessment identifies obstructions or other conditions that make its use impractical or unsafe.
http://www.w3.org/ns/prov#wasQuotedFrom	worksafebc.com