About: http://webisa.webdatacommons.org/24551689

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	J. Controller A controller 44 is any type of device such as a console, control panel, access device 24, or any other mechanism by which an operator 46 controls the machine 40.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com