About: http://webisa.webdatacommons.org/381351019

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	By 1654 Pascal had sold about twenty machines, but the cost and complexity of the Pascaline was a barrier to further sales, and production ceased in that year.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org