About: http://webisa.webdatacommons.org/264259692

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	It has long been known to provide a multi-section ramp or stairway assembly which can be wholly contained within a transportation vessel or vehicle such as an airplane or a ship.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com