About: http://webisa.webdatacommons.org/402499930

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 a preferred embodiment, the test patterns are presented to the subject electronically on a visual display monitor or screen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr