About: http://webisa.webdatacommons.org/203903256

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	This specification addresses the use case of a solid object, such as a car, travelling in a plane local to the object, such as a street. The velocity is an instantaneous vector composed of a scalar speed and a heading relative to North.
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org