About: http://webisa.webdatacommons.org/166164749

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	Therefore, reliable long term operation of the movable contact switch is difficult to obtain, and durability is a problem.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr