About: http://webisa.webdatacommons.org/174568464

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	A lubricant can be introduced in the region of the contact surface or a friction-reducing coating may be provided, for example a PTFE (polytetrafluoroethylene, Teflon) coating or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com