About: http://webisa.webdatacommons.org/196268316

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	The extension has a biasing device such as a spring to keep its end in contact with the pressure surface regardless of the degree of arch selected by the passenger.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com