About: http://webisa.webdatacommons.org/175295549

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	FIG. 18 is an axial perspective view of an embodiment including tracks and a third ring with a mating groove;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com