About: http://webisa.webdatacommons.org/343190782

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	ng of alumina, barium sulfate, silicon dioxide and calcium carbonate) to measure the infrared absorptivities of the invisible marking area and other area of said material and identify the information signified by the invisible marking.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com