About: http://webisa.webdatacommons.org/397003132

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	has an outermost surface-protecting layer containing at least one of a metal and a metal oxide, and the ink is an ink as described above.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au