About: http://webisa.webdatacommons.org/32932535

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 30 (FIGS. 1 and 4) is formed from aluminum, or other appropriate material, and includes a number of slits 100 formed therethrough.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com