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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	preferably a ceramic material which may be selected from among materials such as silicon, boron carbide, alumina, aluminum carbide, or beryllium oxide.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com