About: http://webisa.webdatacommons.org/384313861

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 printed marks are of a combination of sufficiently small size and selected color which renders the printed marks visually imperceptible to the human eye, yet easily detectable by a machine such as a scanner.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr