About: http://webisa.webdatacommons.org/269368794

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	Instead of the titanium film 17, the mask may be composed of a titanium compound, an alloy containing titanium, or another metal likely to be oxidized such as chromium (Cr), tantalum (Ta), or aluminum (Al).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com