About: http://webisa.webdatacommons.org/140653509

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	A certain amount of redundancy especially as to parts, such as batteries and motors, is essential in order that the system meet safety requirements.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk