About: http://webisa.webdatacommons.org/5996023

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	In early 1870 W. Stanley Jevons presented a Logical Machine (Jevons 1880:200) for analyzing a syllogism or other logical form e.g. an argument reduced to a Boolean equation.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org