About: http://webisa.webdatacommons.org/358308442

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 photomask suitable for being projected onto a layer of photoresist by means of a projector in practice comprises a glass plate covered with a metal layer, such as chromium, into which a pattern of transparent portions has been etched.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es