Question: The Japanese Touring Car Championship, was a former touring car racing series held in Japan, the series was held under various regulations during its existence, including international categories such as Group A, was a set of motorsport regulations introduced by which organization, covering production-derived vehicles intended for outright competition in Touring car racing and Rallying?
Sentence (from "Group A"): Group A was aimed at ensuring a large number of privately owned entries in races.
Relevant evidence: No