About: http://webisa.webdatacommons.org/366931921

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	Unlike the early days where the methods varied, such as using the dead weight of a fixed mass that was dragged, or the body weight of people at fixed positions stepping on as the sled came past.
http://www.w3.org/ns/prov#wasQuotedFrom	keystonetractorworks.com