About: http://webisa.webdatacommons.org/21875559

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 prior art layering or laminating of light-diffracting films or layers to paper or other substrates, and similar processes used to achieve these results, however, are relatively expensive and require multiple steps of fabrication.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca