About: http://webisa.webdatacommons.org/147388512

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 upper shield may comprise silica, low levels of pigment, polymeric beads, glass beads, or other materials known in the art to provide a roughness frequency that hides the formation of the fingerprint.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com