About: http://webisa.webdatacommons.org/439814894

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	However, when a control system shown in FIGS. 4 and 5 is used, dangerous conditions can arise, as described in the following, i.e. the system does not have a fail-safe operation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca