About: http://webisa.webdatacommons.org/135879854

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 values of the user-defined variables can be entered, for example, using a keyboard 54 or other input device coupled to the controller 50.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es