About: http://webisa.webdatacommons.org/283673882

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	What I was referring to, including the general concept of a chainring with alternating thick-thin teeth, as a means of power transmission without chain hopping, he is been done back in 1979.
http://www.w3.org/ns/prov#wasQuotedFrom	vitalmtb.com