About: http://webisa.webdatacommons.org/439948073

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	The bearings 178 may be carbon graphite, Teflon, ball bearings, ceramic, ultra high molecular weight (UHMW) polyethylene or other similar bearings capable of withstanding the rotation of the rotor shaft 166.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca