Question: Who has been involved in more music groups, Ryuichi Kawamura or Billy Mackenzie?
Sentence (from "Inoran"): Kiyonobu Inoue (井上 清信 , Inoue Kiyonobu , born on September 29, 1970 in Hadano, Kanagawa) , known exclusively by his stage name Inoran, is a Japanese musician, singer and songwriter.
Relevant evidence: No