About: http://webisa.webdatacommons.org/402750837

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 sense that there are tools such as slide rules, mechanical calculators
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com