About: http://webisa.webdatacommons.org/81613620

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	And subadditive implies constant velocity of 0 for everything, but that makes sort of sense if you are moving through time as well as space, but that may be not understanding subadditive.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com