About: http://webisa.webdatacommons.org/41483525

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 both the preferred embodiment and the alternative embodiments the low friction material may comprise polytetrafluoroethylene (TEFLON), a polyethylene plastic, or other materials well known in the art.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com