About: http://webisa.webdatacommons.org/104536093

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	Mask 20 may be a transparent substrate, such as glass, with an opaque pattern formed upon it, or it may be an opaque material with holes formed in it.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com