About: http://webisa.webdatacommons.org/133751944

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	Polymers, including ultrahigh molecular weight polyethylene (UHMWPE), are commonly used as bearing materials paired with an opposing metal, ceramic, or other composition ball head.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com