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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	In particular, metals such as titanium and zirconium have frequently been used as getters; see for instance, U.S. Pat. Nos. 4,629,611 and 5,556,603.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com