About: http://webisa.webdatacommons.org/30243951

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	A magnetic disc is formed by applying in order an undercoat film, a magnetic film and a protective film on a substrate according to any process such as sputtering, coating and depositing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com