About: http://webisa.webdatacommons.org/56098807

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	Alternatively, the retainer has been formed by machining a sinter material containing tungsten disulfide (W S2), and Mo S2, mixed with a metal, such as copper (Cu), tin (Sn), tantalum (Ta), and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com