About: http://webisa.webdatacommons.org/286605476

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	Getter materials that have been used for the production of prior art getter devices include metals such as zirconium (Zr), titanium (Ti), niobium (Nb), tantalum (Ta), and vanadium (V), and the alloys of these metals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com